Dear Mr. President is a 1942 album by the Almanac Singers.
[1] After the Japanese attacks on Pearl Harbor, in February 1942 the Almanacs went into the studio to record a set of songs supporting the American war effort.
[1] This was partly because with American entrance into World War II all American unions adopted a no-strike pledge.
[2] Another contributing factor was that, after Hitler invaded the USSR in June 1941, Moscow had reversed its previous anti-intervention stance as expressed in the group's earlier album, Songs for John Doe.
This lost the Almanacs a sizeable chunk of their working repertoire.