Greetings, I'm an author and writer about non-fiction topics. My area of interest is the timeframe from 1860-1915. I use 50% of primary sources from the National Archives or university archives and special collections, such as diaries, letters, comtemporaneous sketches, etc.
During research for my books, I like to see if anything my biography subject notes in their diary has a Wikipedia entry. If I can add historical context or accuracy, I try to.