1: Well-written

Check for WP:LEAD:

  1. Check for Correct Structure of Lead Section:  Done
  2. Check for Citations (WP:LEADCITE):  Done
  3. Check for Introductory text:  Done
    • Check for Provide an accessible overview (MOS:INTRO):  Done
      • Major Point 1: History "The Colross estate was originally developed as a plantation by Alexandria merchant John Potts, who began construction of the mansion between 1799 and 1800. In 1803, the property was purchased by Jonathan Swift, an Alexandria merchant and city councilman. Swift continued the mansion's construction during his ownership. Thomson Francis Mason (1785–1838), son of Thomson Mason (1759–1820) and grandson of Founding Father George Mason (1725–1792) of Gunston Hall, purchased Colross following Swift's death in 1824. Mason served as a judge of the Criminal Court of the District of Columbia and as Mayor of Alexandria. During his ownership, Mason made Colross his chief homestead and undertook substantial modifications and additions to the mansion. After a series of successive ownerships, the area around Colross became heavily industrialized and the mansion was purchased by John Munn in 1929. Between 1929 and 1932, the mansion was transported brick by brick to Princeton. In 1958, Colross was sold to Princeton Day School. It currently serves as an administration building for the school, housing its admission and advancement offices." (summarised well in the lead)
      • Major Point 2: Architecture "The Colross mansion is a two-story brick Georgian style structure, featuring an architectural plan similar to Mount Vernon and Woodlawn, and originally flanked by two wings. The front entrance is covered by a spacious Neoclassical portico supported by wooden Doric columns. The roof is topped by a balustraded deck and further embellished by three dormer windows. The Colross property originally occupied the entire 1100 block of Oronoco Street." (summarised well in the lead)
      • Major Point 3: Archeological excavation "Following its purchase by a real estate development company in 2005, an excavation of the Colross archaeological site began between March and June 2005 at the behest of the city of Alexandria. Archaeologists uncovered an underground domed brick cistern and evidence of slave outbuildings, in addition to the foundations of the estate's exterior walls and several ancillary structures. The excavation of the Colross site resulted in 79 condominium buyers walking away from their purchase agreements, due to the delay in construction of the luxury Monarch Condominium project." (summarised well in the lead)
      • Major Point 4: Significant Mason family events "" (not a concise summary of the corresponding section in the body)
    • Check for Relative emphasis:  Done
      • Major Point 1: History "The Colross estate was originally developed as a plantation by Alexandria merchant John Potts, who began construction of the mansion between 1799 and 1800. In 1803, the property was purchased by Jonathan Swift, an Alexandria merchant and city councilman. Swift continued the mansion's construction during his ownership. Thomson Francis Mason (1785–1838), son of Thomson Mason (1759–1820) and grandson of Founding Father George Mason (1725–1792) of Gunston Hall, purchased Colross following Swift's death in 1824. Mason served as a judge of the Criminal Court of the District of Columbia and as Mayor of Alexandria. During his ownership, Mason made Colross his chief homestead and undertook substantial modifications and additions to the mansion. After a series of successive ownerships, the area around Colross became heavily industrialized and the mansion was purchased by John Munn in 1929. Between 1929 and 1932, the mansion was transported brick by brick to Princeton. In 1958, Colross was sold to Princeton Day School. It currently serves as an administration building for the school, housing its admission and advancement offices." (the lead gives due weight as is given in the body)
      • Major Point 2: Architecture "The Colross mansion is a two-story brick Georgian style structure, featuring an architectural plan similar to Mount Vernon and Woodlawn, and originally flanked by two wings. The front entrance is covered by a spacious Neoclassical portico supported by wooden Doric columns. The roof is topped by a balustraded deck and further embellished by three dormer windows. The Colross property originally occupied the entire 1100 block of Oronoco Street." (the lead gives due weight as is given in the body)
      • Major Point 3: Archeological excavation "Following its purchase by a real estate development company in 2005, an excavation of the Colross archaeological site began between March and June 2005 at the behest of the city of Alexandria. Archaeologists uncovered an underground domed brick cistern and evidence of slave outbuildings, in addition to the foundations of the estate's exterior walls and several ancillary structures. The excavation of the Colross site resulted in 79 condominium buyers walking away from their purchase agreements, due to the delay in construction of the luxury Monarch Condominium project." (the lead gives due weight as is given in the body)
      • Major Point 4: Significant Mason family events "" (the lead does not give due weight as is given in the body)
    • Check for Opening paragraph (MOS:BEGIN):  Done
      • Check for First sentence (WP:LEADSENTENCE):  Done
        • Colross (also historically known as Belle Air and Grasshopper Hall) is a Georgian mansion and former estate in Old Town Alexandria in the U.S. state of Virginia.
      • Check for Format of the first sentence (MOS:BOLDTITLE):  Done
      • Check for Proper names and titles:  Done
      • Check for Abbreviations and synonyms (MOS:BOLDSYN): None
      • Check for Foreign language (MOS:FORLANG): None
      • Check for Pronunciation: None
      • Check for Contextual links (MOS:CONTEXTLINK):  Done
      • Check for Biographies: NA
      • Check for Organisms: NA
  4. Check for Biographies of living persons: NA
  5. Check for Alternative names (MOS:LEADALT):  Done
    • Check for Non-English titles:
    • Check for Usage in first sentence:
    • Check for Separate section usage:
  6. Check for Length (WP:LEADLENGTH):  Done
  7. Check for Clutter (WP:LEADCLUTTER): None
 Done

Check for WP:LAYOUT:  Done

  1. Check for Body sections: WP:BODY, MOS:BODY.  Done
    • Check for Headings and sections:  Done
    • Check for Section templates and summary style:  Done
    • Check for Paragraphs (MOS:PARAGRAPHS):  Done
      • Paragraphs should be short enough to be readable, but long enough to develop an idea. (WP:BETTER)
      • Fix "According to the Alexandria Economic Development Partnership, 79 condominium buyers walked away due to the construction delay." in the Archeological excavation section.
  2. Check for Standard appendices and footers (MOS:APPENDIX):  Done
    • Check for Order of sections (WP:ORDER):  Done
    • Check for Works or publications:  Done
    • Check for See also section (MOS:SEEALSO): None
    • Check for Notes and references (WP:FNNR):  Done
    • Check for Further reading (WP:FURTHER): None
    • Check for External links (WP:LAYOUTEL): None
    • Check for Links to sister projects: None
    • Check for Navigation templates:  Done
  3. Check for Formatting:  Done
    • Check for Images (WP:LAYIM):  Done
    • Check for Links:  Done
    • Check for Horizontal rule (WP:LINE):  Done
 Done

Check for WP:WTW:  Done

  1. Check for Words that may introduce bias:  Done
    • Check for Puffery (WP:PEA):  Done
    • Check for Contentious labels (WP:LABEL):  Done
    • Check for Unsupported attributions (WP:WEASEL):  Done
    • Check for Expressions of doubt (WP:ALLEGED):  Done
    • Check for Editorializing (MOS:OPED):  Done
    • Check for Synonyms for said (WP:SAY):  Done
  2. Check for Expressions that lack precision:  Done
    • Check for Euphemisms (WP:EUPHEMISM):  Done
    • Check for Clichés and idioms (WP:IDIOM):  Done
    • Check for Relative time references (WP:REALTIME):  Done
    • Check for Neologisms (WP:PEA): None
  3. Check for Offensive material (WP:F***):  Done

Check for WP:MOSFICT:  Done

  1. Check for Real-world perspective (WP:Real world):  Done
    • Check for Primary and secondary information (WP:PASI):  Done
    • Check for Contextual presentation (MOS:PLOT):  Done
None


2: Verifiable with no original research

 Done

Check for WP:RS:  Done

Cross-checked with other GAs: Virginia Argus and Hampshire Advertiser, Confederate Memorial (Romney, West Virginia), Wirgman Building, Wappocomo (Romney, West Virginia), Christian Streit White, Valley View (Romney, West Virginia), Alexander White (Virginia), Francis White (Virginia politician)

  1. Check for the material (WP:RSVETTING): (not contentious)  Done
    • Is it contentious?: No
    • Does the ref indeed support the material?:
  2. Check for the author (WP:RSVETTING):  Done
  3. Check for the publication (WP:RSVETTING):  Done
  4. Check for Self-published sources (WP:SPS):
 Done

Check for inline citations WP:MINREF:  Done

  1. Check for Direct quotations:  Done
    • "well proportioned width" … [4]
    • "at a game of cards" [6][9]
    • "famous 'bounty jumper'" [6][9]
    • "the grounds included a whole square block and were enclosed with an ancient brick wall ten feet in height."[9]
    • "never stay locked more than three days" at a time.[9][15]
    • "giggling, singing, and talking" … .[9]
    • "fine house and ground and the chief residence of the Masons of Alexandria, much frequented by officers of the army." … "hospitality and civility of the head of the house," [14]
    • "had no gaslights, and running water only in the kitchen," … "stood in the midst of railroad tracks." … "elegant plaster ceilings" … "great oak doors" [17]
    • "largest and most beautiful mansion ever erected in Alexandria."[20]
  2. Check for Likely to be challenged:  Done
  3. Check for Contentious material about living persons (WP:BLP): NA
 Done
  1. Check for primary sources (WP:PRIMARY):  Done
  2. Check for synthesis (WP:SYN):  Done
  3. Check for original images (WP:OI):  Done


3: Broad in its coverage

 Done

Cross-checked with other GAs: Virginia Argus and Hampshire Advertiser, Confederate Memorial (Romney, West Virginia), Wirgman Building, Wappocomo (Romney, West Virginia), Christian Streit White, Valley View (Romney, West Virginia), Alexander White (Virginia), Francis White (Virginia politician)

  1. Check for Article scope as defined by reliable sources:
    1. Check for The extent of the subject matter in these RS:
    2. Check for Out of scope:
  2. Check for The range of material that belongs in the article:
    1. Check for All material that is notable is covered:
    2. Check for All material that is referenced is covered:
    3. Check for All material that a reader would be likely to agree matches the specified scope is covered:
    4. Check for The most general scope that summarises essentially all knowledge:
    5. Check for Stay on topic and no wandering off-topic (WP:OFFTOPIC):
b. Focused:
 Done
  1. Check for Readability issues (WP:LENGTH):
  2. Check for Article size (WP:TOO LONG!):


4: Neutral

 Done

4. Fair representation without bias:  Done

  1. Check for POV (WP:YESPOV):  Done
  2. Check for naming (WP:POVNAMING):  Done
  3. Check for structure (WP:STRUCTURE):  Done
  4. Check for Due and undue weight (WP:DUE):  Done
  5. Check for Balancing aspects (WP:BALASPS):  Done
  6. Check for Giving "equal validity" (WP:VALID):  Done
  7. Check for Balance (WP:YESPOV):  Done
  8. Check for Impartial tone (WP:IMPARTIAL):  Done
  9. Check for Describing aesthetic opinions (WP:SUBJECTIVE):  Done
  10. Check for Words to watch (WP:YESPOV):  Done
  11. Check for Attributing and specifying biased statements (WP:ATTRIBUTEPOV):  Done
  12. Check for Fringe theories and pseudoscience (WP:PSCI): None
  13. Check for Religion (WP:RNPOV): None


5: Stable: No edit wars, etc: Yes

6: Images  Done (PD)

Images:
 Done

6: Images are tagged with their copyright status, and valid fair use rationales are provided for non-free content:  Done

  1. Check for copyright tags (WP:TAGS):  Done
  2. Check for copyright status:  Done
  3. Check for non-free content (WP:NFC):  Done
  4. Check for valid fair use rationales (WP:FUR):  Done

6: Images are provided if possible and are relevant to the topic, and have suitable captions:  Done

  1. Check for image relevance (WP:IMAGE RELEVANCE):  Done
    • Image 1 (Colross Alexandria VA 1916 05.jpg): Relevant.
    • Image 2 (Colross Alexandria VA 1916 06.jpg): Relevant.
    • Image 3 (Colross Alexandria VA 1916 04.jpg): Relevant.
    • Image 4 (Colross Alexandria VA 1916 02.jpg): Relevant.
  2. Check for Images for the lead (WP:LEADIMAGE):  Done
    • Image 1 (Colross Alexandria VA 1916 05.jpg): Appropriate & Representative
  3. Check for suitable captions (WP:CAPTION):  Done
    • Caption 1: "Colross, photographed in 1916" succinct and informative
    • Caption 2: "The front portico and main entryway at Colross." succinct and informative
    • Caption 3: "Architectural drawing of the front elevation of Colross." succinct and informative
    • Caption 4: "Architectural details of Colross." succinct and informative


I'm glad to see your work here. The prose quality in particular is meticulous and engrossing. As per the above checklist, I do have some insights that I think will be useful in improving the article:

  • I think the lead can be improved in order to provide an accessible overview and to give relative emphasis for the Significant Mason family events.
  • I think the layout needs to be fixed.

Besides that, I think the article looks excellent. Caponer, please feel free to strike out any recommendation you think will not help in improving the article. All the best,