The collection contains articles of incorporation, by-laws, minutes, annual reports, budgets, policies, newsletters, newspaper clippings scrapbooks, photographs, Chisholm family genealogy and photographs, museum programming materials and photographs, American Alliance of Museums museum assessment, strategic plan.

The collection includes 12 journals of expenditures or bills paid to local suppliers of goods and services, receipts, and monthly payroll records. The ledgers also include some years of payroll, naming the employee and giving their job title. The collection also contains a history of Northwood Children’s Home, by-laws, 1907 annual report, brochure, and news clippings.

The collection consists primarily of correspondence written by four of Peter Tilderquist’s children: Alice Minnie (Tilderquist) Gibson; Eva Tilderquist; Anna Lavinia (Tilderquist) Anderson; and David Tilderquist. The collection also contains personal papers and estate papers.