[1] His funeral, in the third Jewish cemetery of Athens, was attended by some of his closest friends and colleagues, such as James Merrill, David Jackson, Tony Parigory, Nelly Liambey, Bernie Winebaum, Rachel Hadas and Alan Ansen.
[3] Together with his lifelong friend (and sometime lover[4]) W. H. Auden, Kallman wrote the libretto for Stravinsky's The Rake's Progress (1951).
They were commissioned to write the lyrics for Man of La Mancha, but Kallman did not work on the project, and the producers decided against using Auden's contributions.
Kallman was the sole author of the libretto of The Tuscan Players for Carlos Chávez (1953, first performed in 1957 as Panfilo and Lauretta).
He and Auden collaborated on a number of libretto translations, notably The Magic Flute (1956) and Don Giovanni (1961).