The materials in this series date from 1917-1931, however the bulk of the materials date from 1919-1928. This series also contains undated materials. Included in the series are financial records and correspondence from the Knights of Columbus, Lexington Council, No. 293 journal and publicity committee, which Carley chaired in 1928. Carley also collected newspaper clippings relating to Knights of Columbus (K of C) events, from 1923-1929. Additionally, there are programs from K of C theater events, balls, dinners, brunches and religious events that comprise the bulk of the series. The programs include local business advertisements, as well as, names of local K of C members that provide a snapshot of Greenpoint from the 1920s through the 1940s. The K of C, Lexington Council, No. 293, of which Carley was a member, sponsored many of the events noted in the programs. However, the series contains a representative sample of materials from other Brooklyn, Long Island, and New York state chapters. Carley also collected multiple issues of various K of C chapter periodical bulletins. Two copies of the K of C publication, Columbia, have been placed with the oversized materials.

The materials in this series date from 1922-1954 with the bulk range of 1925-1951. The series also contains undated materials. The first part of this series consists of New York State Committee of the Democratic Party and Greenpoint Peoples Regular Democratic Organization (GPRDO) meeting minutes from 1940-1953. The rest of the collection consists of souvenir programs for GPRDO sponsored balls and dinners, some of which were in Carley's honor. The event proceedings contained in the programs list names of other active GPRDO members. A political cartoon poster including Carley and other popular Brooklyn Democrats has been placed with the oversized materials.

This series contains materials from 1905-1956 and undated materials. This series consists of the widest variety of materials and also has the largest number of oversized items including various posters, sheet music, and his primary school and communion certificates from St. Anthony's of Padua Roman Catholic Church and School. The remainder of the series contains report cards from St. John's College, personal correspondence, receipts, records of his World War I service and his subsequent veteran insurance benefits, his father's plumbing business records, many periodicals, programs and bulletins from local catholic organizations and various New York City theaters, and sheet music. Although the collection provides a number of programs from St. Francis College commencements and events, Carley's affiliation with St. Francis College is unstated.

This collection includes 15 black-and-white photographs of Walter A. Carley and others, mostly relating to the Knights of Columbus, Lexington Council No. 293 and Boys' High School. Six photographs are located in Box 3. Nine oversized photographs are located in the Print Room.

This collection consists of postcards, circa 1910-1924, donated by the Walter A. Carley Estate. The subject of many of the postcards is the Knights of Columbus (K of C) Institute located at 81 Hanson Place in the Fort Greene neighborhood of Brooklyn. Interior and exterior views of the K of C building are represented in the postcards.