Parke Davis collectible ink blotter from the 1940s advertising Cas-Evac, a laxative used to alleviate chronic constipation. How the medication works in the large bowel is discussed on the left side of the blotter. Along the right side of the blotter, information is given on how Cas-Evac differs from fluid extract cascara sagrada and aromatic cascara. The treatment is supplied in 2-fluid ounce bottles with droppers, and 4-, 8- and 16- fluid ounce bottles as well. The blotter has the date 3-41 written on it. The Parke-Davis identifier is bl-27-6.
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7 X 3.5 inches
Parke, Davis & Company, “Cas-Evac,” American Institute of the History of Pharmacy Digital Collection, accessed December 6, 2023, https://aihp.omeka.net/items/show/514.