| Bingham & Hilliard (Memphis, Tennessee) A comparative Pepsin experiment n.d. Cabinet card Larry Gottheim, Be-hold, Inc Photographs: Cabinet Cards & some Civil War, 29 October 2016, Lot 530 LL/69690 This is a rare example of a cabinet card giving scientific evidence. The bottles contain mixtures including four brands or types of pepsin. The photograph includes the hand-written protocol that is beneath the bottles.
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