Disney's Fantasia FX

Michael Sporn Animation - Splog » Fantasia FX: "Herman Schultheis was an effects animator who worked on Fantasia. He kept a tight record of the effects they were creating from 1938-1941 and a photo display of how they were done. Schultheis disappeared in 1954 while trekking through Central America, and the notebook was forgotten until his wife’s death in the early 1990s, after which it was discovered by Howard Lowery behind the couple’s bedroom wall."