Association for Preservation Technology International

The Association for Preservation Technology International (APT) is a not-for-profit, multidisciplinary, membership organization dedicated to promoting the best technology for conserving and preserving historic structures and their settings. Founded in 1968 by preservationists from Canada and the United States, it now has 1,500 members from 30 countries, with headquarters in Springfield, Illinois. APT’s activities include conferences, training and education programs, and publications on the technical aspects of preservation.

APT members include architects, engineers, conservators, consultants, contractors, craftspeople, curators, administrators, program managers, developers, educators, historians, landscape architects, materials suppliers, students, technicians, and others involved in historic preservation.


Professionals in the field of historic preservation from Canada and the United States met in Canada in 1968 to form an organization that would promote the exchange of information and ideas pertaining to work on the constructed manifestation of cultural heritage, including not only buildings and landscapes, but also objects and collections.[1] The organization’s first four aims and objectives, as published in the first Newsletter in April 1969, were:[2]

  1. To provide a useful forum to promote the quality of professional practice in the field of historic preservation in Canada and the United States.
  2. To encourage the research, collection and publication of technical information in all aspects of historic preservation.
  3. To encourage the training of professionals in preservation and restoration technology.
  4. To encourage the training of craftsmen in the traditional techniques and skills required for historic preservation.

The founding members were Alice Allison, David Bartlett, Gerald Budner, Jacques Dalibard, Oliver Torrey Fuller, George MacBeath, Pierre Mayrand, Jeanne Minhinnick, Lee Nelson, William Patterson, Charles E. Peterson, Jack Richardson, and Peter John Stokes.

The first president was Charles E. Peterson. Early members, including Martin E. Weaver, the organization’s fifth president,[3] and Morgan W. Phillips, were instrumental in establishing the field of architectural conservation.


APT’s mission is “to advance appropriate traditional and new technologies to care for, protect, and promote the longevity of the built environment and to cultivate the exchange of knowledge throughout the international community.”[4]



The initial impetus of the founders to combine the dissemination of scholarly studies of the history of building with discussions about the application of the philosophy and practice of heritage conservation technology resulted in a conference at the Pine Brook Conference Center in Upper Saranac Lake, New York, in 1969. The APT conference then became an annual event. Since 1975, training courses (now called workshops) were presented in conjunction with the conferences. From their inception, the conferences and training courses have been characterized by exchanges of ideas among practitioners, program managers and policy makers.[5] APT has also presented training courses, workshops and symposia as stand-alone events, independent of annual conferences.


APT disseminates information through its website, electronic and print publications, and digital archives. The organization’s flagship publication is the APT Bulletin, a peer-reviewed journal published quarterly. The newsletter, the Communiqué, is published bimonthly and circulated through email.[6]

APT periodically publishes books in the field of heritage conservation. The most recent publications are the Preservation Technology Primer, a collection of articles from the APT Bulletin, and the second edition of Introduction to Early American Masonry, by Harley J. McKee.[7]

To disseminate information on historic building materials and systems, APT created the Building Technology Heritage Library (BTHL), a digital collection of historic building trade catalogs hosted by the Internet Archive. The collection is growing and had over 9,800 items in September 2018.


As of November 2019 there are 21 local APT chapters, which allow interaction among members throughout the year.[8] Fourteen chapters are in the United States, three are in Canada, with one in Australasia, one in Latin America, and new chapters for Europe and East Asia. Chapters host local events including visits to sites of interest to members, workshops, and symposia.

Technical CommitteesEdit

Development and dissemination of technical information is mainly carried out by technical committees with specific focus areas.[9] The technical committees are: Preservation Engineering,[10] Sustainable Preservation,[11] Modern Heritage,[12] Documentation, Materials,[13] and Codes.


  1. ^ Waite, Diana; Shore, Diana (1998). "Three Decades of Interdisciplinary Preservation Technology: APT Celebrates Its Thirtieth Anniversary" (PDF). APT Bulletin. 29 (3–4): H21–H24. JSTOR 1504610.
  2. ^ "Aims and Objectives of the A.P.T.". Newsletter of the Association for Preservation Technology. 1 (1): 1. 1969. JSTOR 1493345.
  3. ^ "APT Presidents" (PDF). Retrieved June 27, 2020.
  4. ^ "What Is APT?". Retrieved October 4, 2018.
  5. ^ Miller, Hugh C. (2006). "The Association for Preservation Technology: Profile of a North American Conservation Organization". Journal of Architectural Conservation. 12 (1): 91–100. doi:10.1080/13556207.2006.10784962.
  6. ^ "Communiqué". Retrieved September 15, 2018.
  7. ^ Webb, Patrick (February 19, 2018). "Early American Masonry". Traditional Building.
  8. ^ "Chapters Overview". Retrieved September 15, 2018.
  9. ^ Koga, Dean (2018). "Emergence of the APT Technical Committees". APT Bulletin. 49 (3–4): 15.
  10. ^ Crowe, Timothy M.; Morrison, Tom; Dumsick, John (2018). "Preservation Engineering Technical Committee". APT Bulletin. 49 (3–4): 16.
  11. ^ Gotthelf, Jill H.; Brandt, Mark Thompson; Patrick, Michael (2018). "Technical Committee on Sustainable Preservation". APT Bulletin. 49 (3–4): 18.
  12. ^ Normandin, Kyle; Slaton, Deborah (2018). "Technical Committee on Modern Heritage". APT Bulletin. 49 (3–4): 20.
  13. ^ "Materials". Retrieved September 15, 2018.

External linksEdit