DS, one page, 8.5 x 5.5, no date. A rider to an AGVA Exclusive Agency Contract between Moe Howard, Larry Fine and Joe DeRita, which reads, in part: “This agreement shall not apply with respect to Artists’ services in connection with circuses, fairs, arena, stadiums, auditoriums and parks, but Artists’ services in connection therewith shall, nevertheless, be deemed employment…,” signed by each in blue ballpoint. In fine condition, with scattered light creasing, two sets of staple holes to left margin, small area of trivial soiling far from the signatures. COA PSA/DNA and R&R COA.