OJ 11/54, [24] Typed letter from Hoboken to Schenker, dated August 27, 1928

Hoboken recounts his and his wife's travels through Germany, including encounters with Thomas Mann and others. He expects to return to Vienna in mid-October.

OJ 89/4, [2] Typewritten letter (carbon copy) from Hoboken to Schenker, dated March 19, 1930

Hoboken compares performances of Beethoven's Missa solemnis by Furtwängler and Klemperer. — He has experienced pains in his arm, and has taken recuperative lessons from Rudolf Breithaupt. — He details work he has been doing for the Photogramm Archive, work of his own, and that for Schenker.

PhA/Ar 36, [1] Carbon copy of a typewritten letter from Anthony van Hoboken to Heinrich Schenker, dated September 15, 1930

Hoboken sends his scoring of a C. P. E. Bach harpsichord concerto for Schenker to check in connection with a planned new collected edition of the works of that composer.

OJ 11/54, [29] Typewritten letter from Hoboken to Schenker, dated December 5, 1930

Hoboken depicts the abundance of music in Berlin, contrasting Furtwängler, Klemperer and Kleiber. — He has decided to withdraw his planned financing of the Photogramarchiv's collected edition of C. P. E. Bach.

OJ 89/6, [10] Typewritten letter (carbon copy), from Hoboken to Schenker, dated August 5, 1933

Hoboken is gratified by Schenker's praise of his song compositions; — He will continue his Chopin projects someday, but is preoccupied with the worsening European political situation; — He comments on Kleiber, Max Graf, on Goos's estimate of Schenker's importance, and returns newspaper clippings that Schenker has sent him with comments.

Diary entry by Schenker for 12 May 1924

Diary entry by Schenker for 21 May 1924

Diary entry by Schenker for 4 February 1928

Diary entry by Schenker for 9 February 1928

Diary entry by Schenker for 13 February 1928

Diary entry by Schenker for 3 February 1933