This series formerly included architectural plans concerning N-YHS buildings. These plans were moved to different record groups in 2015-16. Architectural plans from prior to the 1960s are now found with other buildings-related matter in New-York Historical Society Original Building Planning & Construction Records (NYHS-RG 3). Plans related to proposed and actual renovations from the 1960s to the 1990s are in the New-York Historical Society building renovations and maintenance records (NYHS-RG 4).
