DS, two onionskin pages, 8.5 x 11, July 25, 1949. Amendment to a previous agreement changing wording regarding other performances by Cantor and his rate of pay with regard to union scale. Signed on the second page in blue ink by Cantor. Accompanied by a certificate of authenticity from PSA/DNA. In fine condition, with punch and staple holes to top edge, a few creases, and a small pencil notation to first page. R&R COA.