The series consists of the NTSH Edmonton branch incoming letters. Among others there are correspondence from:
- Bohdan Bociurkiw (1959-1965)
- Yulian Bucmaniuk (1958)
- Nicholas Flak (1963-1964)
- M. Hladyshevsky (1962-1964)
- Mychailo Hutsulak (1959-1963)
- Ivan Keywan (1958-1968)
- Volodymyr Kubiiovych i Zenon Kuzela (1950-1958)
- Lev Krypiakevych (1956-1959)
- Basil Laba (1956-1962)
- W. Lazorko (1963-1965)
- O. Maslianyk (1957-1964)
- I. Mirchuk (1956-1961)
- Orest Starchuk (1956-1965)
- Yar Slawutych (1961-1965)
- Il. Chelowsky (1962)
- Roman Smal-Stocki (1959-1964)
- Volodymyr Yaniv (1955)
- Stepania Zhmurkevych (1956-1962)
- Eugene Wertyporoch (1954-1968)
- official correspondence from NTSH in Toronto including financial and other reports, leaflets, programs of events, invitations, etc. (1951-1966)
- official correspondence from NTSH in New York including reports, information about celebrations, book distributions, and conferences (1958-1974, n/d)
- Letters form Canadian League for Ukraine's liberation (1941-1968)
- Ukrainian professional Society of North America (1960)
- Ukrainian Canadian Committee (1960-1964)
- National conference of Canadian Slavs (1965-1967)
- Union of Military Invalids, USA (1958)