- Closed tear in upper right margin (not touching the text).

= Letter of recommendation for a female singer who asked Andriessen for an introduction to Evert Cornelis Sr. Andriessen is very positive about her sense of music as well as her technique. At this time she was married with the publisher Wouter Nijhoff. After their divorce in 1925, she disappears from the digital horizon, only to be traced again later as the wife of Jack Dawkins, former British consul to Morocco.

Flipse, E. (1896-1973). AUTOGRAPH LETTER SIGNED "Eduard Flipse" to "Zeer geachte Heer Cornelis", pen and ink, dated "R'dam 6 Januari 1931", 1 leaf, recto only.

= Letter in response to a request to stand in for Mr Cornelis as choir director on rehearsals, who had fallen ill. He outlines his planned rehearsal schedule and ends his letter as follows: "Ik zal trachten het koor geheel "af-te-richten." Zoo nodig wil ik ook de uitvoering dirigeeren." The latter phrase refers to the concert of 20 February, 1931.

Paap, W. (1908-1981). AUTOGRAPH LETTER SIGNED "Wouter Paap" to "Zeer geachte Heer", pen and ink, dated "Bussum, 12 Maart '29", 1 leaf, recto only.

= The young journalist Wouter Paap, sending a request for an interview with Evert Cornelis on occasion of a concert in Naarden in which he will conduct the unabbreviated St. Matthew Passion.

AND 10 other letters/ notes by composers and conductors written to Evert Cornelis Sr., i.a. by P. VAN ANROOY (on not being able to lend him a celesta), TH. VAN DER BIJL (on his violinconcerto), E. VAN BRUCKEN FOCK (presenting Cornelis with a copy of his latest work: "Compositie voor viool met orkest, getiteld "Erinnerung"") and J. WINNUBST (on a financial matter, prob. concerning the U.S.O.).