Folder231/09- Travel and leisure photographs
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Folder231/11- John Jacob Abel 80th birthday commemoration card
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Folder231/12- John Jacob Abel and Mary Hinman Abel grave markers
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Folder231/13- Laboratories of colleagues
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Folder231/14- University of Lwow [i.e. Uniwersytet Jana Kazimierza] Department of Experimental Pharmacology photograph album
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Folder231/15- Washington Old Hall postcards
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Folder231/16- John Jacob Abel receiving American Association for the Advancement of Science award at Century of Progress Exposition in Chicago
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Folder231/17- Willard Gibbs and William H. Howell medallion
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Folder231/18- Second International Conference on History and Technology, London
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