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 1944 - 1983 (39 years)
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| Sources |
- [S90946] Garth Matthews, Matthews, History of American Crumplers, (Unpublished manuscript, sent to Craig Walsh 14 Nov 2026), Ref J3.3-G5.4#d~sp1, Chapter 4: the J3 Matthew line.
- [S90946] Garth Matthews, Matthews, History of American Crumplers, (Unpublished manuscript, sent to Craig Walsh 14 Nov 2026), Ref J3.3-G5.4#d, Chapter 4: the J3 Matthew line.
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