In 1935, Cooper began to feel something was amiss when he was trying to get a Tarzan vs. King Kong project off the ground for Pioneer Pictures (where he had assumed management of the company). After David O. Selznick suggested the project to Cooper, the flurry of legal activity over using the Kong character that followed—Pioneer had become a completely independent company by this time and access to properties that RKO felt were theirs was no longer automatic—gave Cooper pause as he came to realize that he might not have full control over this product of his own imagination after all. Years later in 1962, Cooper found out that RKO was licensing the character through John Beck to Toho studios in Japan for a film project called King Kong vs. Godzilla. Cooper had assumed his rights were unassailable and was bitterly opposed to the project. In 1963 he filed a lawsuit to enjoin distribution of the movie against John Beck, as well as Toho and Universal (the film's U.S. copyright holder). Cooper discovered that RKO had also profited from licensed products featuring the King Kong character such as model kits produced by Aurora Plastics Corporation. Cooper's executive assistant, Charles B. FitzSimons, stated that these companies should be negotiating through him and Cooper for such licensed products and not RKO. In a letter to Robert Bendick, Cooper stated: Cooper and his legal team offered up various documents to bolster the case that Cooper owned King Kong and had only licensed the character to RKO for two films, rather than selling him outright. Many people vouched for Cooper's claims, including David O. Selznick, who had written a letter to Mr. A. Loewenthal of the Famous Artists Syndicate in Chicago in 1932 stating (in regard to Kong), "The rights of this are owned by Mr. Merian C. Cooper." But Cooper had lost key documents through the years (he discovered these papers were missing after he returned from his World War II military service) such as a key informal yet binding letter from Mr. Ayelsworth (the then-president of the RKO Studio Corp.) and a formal binding letter from Mr. B. B. Kahane (the current president of RKO Studio Corp.) confirming that Cooper had only licensed the rights to the character for the two RKO pictures and nothing more. Without these letters, it seemed Cooper's rights were relegated to the Lovelace novelization that he had