Collection consists of records relating to Muggins the dog and his work with the Canadian Red Cross during the First World War and includes medals awarded to Muggins, photographs, and textual materials related to the content and publication of a book about Muggins by Grant Hayter-Menzies.

Collection consists largely of correspondence between 1945 and 1968 from Dr. Harry R. Lillie (d. 1990). Lillie was a Scottish surgeon, anti-whaling and anti-sealing activist, and author of books on conservation. Collection also includes photographs, postcards, greeting cards and news clippings.