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I've seen mentions that Willougby appear in these:

• The Grey Hounded Hare (1949) maybe
• A Corny Concerto (1943) maybe
• An Itch in Time (1943) maybe
• The Hep Cat (1942) maybe

However, with no references that are at all usable, and I'm not even reasonably confident that this list is even accurate. Something to look at in future. Herostratus ( talk) 21:52, 10 November 2015 (UTC) reply