Des Knaben Wunderhorn
Together with the booklet "Sieben Lieder aus letzter Zeit" ("Seven Songs of Latter Days"), which consists of the five Rückert-Lieder and two of the Lieder aus "Des Knaben Wunderhorn", published in 1905, they now make up a collection known as "24 Songs by Mahler", published by International Music Company, New York, NY.