In 1937 he replaced it with one of the new Leica 35 mm cameras, which was much more convenient and served him until the end of his career, being replaced with an identical model when the original was stolen in 1963.
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An early success was to obtain the first photograph of Midland Railway 0-10-0 banker locomotive 2290 in steam, at Derby in January 1920.
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Casserley acquired his first motor car in 1934, which aided his reaching obscure small railway lines and investigating windmills, in which he had also developed an interest.