This post is part of a continuing series documenting the Henry Tolman collection of 1898 proprietary printed cancels.
Or is it American Syndicate Drug Company? A search using contemporary technology doesn't turn up much, if anything, for the firm American Sanitary Drug. It may be that the firm never existed. Henry Tolman, in his collection, suggested on his page for these cancels that the firm's actual name was or might have been American Syndicate Drug Company. But his suggestion creates a very different problem than searching and finding nothing. Combining the words drug and syndicate and doing a general search produces zillions of results, mostly having to do with narco-trafficantes.
Joyce lists one type for this cancel on three values, so Mr. Tolman's collection of this company appears complete. But given that the actual name of the firm is uncertain, I'm also not sure if we really know how many types this firm might have actually issued. Whatever the case, additional information is needed to confirm the name of this company.
A check of the BDR2 shows the 2 1/2c stamp attributed to American Sanitary Drug, and a few handstamps with the same initials without attribution. There is a line with a small advert and no stamp for the "Aldo Summer Drug Co." It appears there remains sleuthing to be done here!