Series consists of 4 scrapbooks. The two earlier scrapbooks contain information from when the Club was called the Hamilton Bird Protection Society and include newspaper articles, correspondence, photographs, meeting announcements, and programs for lectures and events. The third scrapbook contains information on the sanctuaries held by the Club, and photographs of the Spooky Hollow and Short Hills Wilderness Sanctuaries. The fourth scrapbook contains mostly newspaper articles of press coverage on the Hamilton Naturalists’ Club.