IPMS friend Wayne Homren advises, "I have an archive of material from Odd and Curious Money collector Howard Gibbs of Pittsburgh. I shipped everything to the Newman Numismatic Portal and it'sbeen digitized: https://nnp.wustl.edu/library/archivedetail/533970."

While somewhat spotty in the early years, this archive covers 1927-1973, but the Zoom in feature will need to be used to read them. The first entry, dated to 1927, actually houses a letterwritten in 1968, however. But the next is a letter from Dr. J. van der Hoop, Batavia, Netherlands East Indies, written August 8, 1938, concerning the acquisition of two brass drums from Alor, shippedto him at the "Pittsburgh Numismatic Museum" July 29, 1939.

One of the most interesting items is Gibbs's letter of August 1, 1947, describing his collection and providing anecdotes of how he obtained certain items (he hoped that philanthropist PaulMellon would acquire the collection and house it in a museum, but this never happened and the Gibbs Collection was broken up and sold in a series of Hans M. F. Schulman auctions).

The 1955 file contains fascinating details of Gibbs' partnership with Schulman, with prices, comments on buyers, etc.

I have not had time to review the entire archive, but it has information on the sources of many pieces, of interest to collectors having material with Gibbs pedigrees.

To check out the Gibbs archive on the newman Numismatic Portal, see:
Howard D. Gibbs Archives (https://nnp.wustl.edu/library/archivedetail/533970)

For more information on the International Primitive Money Society, see:
https://www.facebook.com/internationalprimitivemoneysociety/

Bob adds: