Collection consists of correspondence received by Kanka from political and military figures in various countries. Kanka sent copies of Czech-language books he authored to these individuals and received their responses of thanks, which he then compiled. Notable responses received by Kanka include letters from Anton Cermak, Faik Komitza, T.J. Carney, Carter H. Harrison Jr., A.A. Bickford, Henrik Kauffmann, Samuel Alphonsus Cardinal Stritch, Francisco Franco, Malvina C. Thompson, Dwight Eisenhower, George S. Patton, Douglas MacArthur, Adlai Stevenson, Richard J. Daley, Evelyn Lincoln, Herbert Hoover, and Allen W. Dulles. Also included are letters from the secretaries of several African and European kings, as well as from the private secretary to Mahatma Gandhi.
In addition to correspondence, the collection also includes three essays by B.V. Lastuvka, as well as pages taken from Daily Narod.