National Recreation Association, formerly Playground and Recreation Association of America. Seven publications, including "Standards of Training, Experience and Compensation in Community Recreation Work" and "Games for Quiet Hours and Small Spaces" [owned by Robert Crawford], 1933-1938, undated, Shelf: 33, Box: 33, Folder: 2. Annual Reports and Other Publications, FP.2010.001.001. Fairmount Park Historic Resources Archive. https://pprarchives.libraryhost.com/repositories/2/archival_objects/397658 Accessed June 09, 2025.