I was wondering if any of the E-sylumites have ever tried to figure out where the Mint Collection acquired some of its pieces.

The attached spreadsheet is an extract from the Mint Account book of the U.S. coins originally done by John Dannreuther.

This book starts in 1858 and is now on the Newman portal at the link below.
https://archive.org/details/
MintAccountsBook18561903

As you can see, I have traced some Mint collection purchases to such sales as Bushnell, Cottier and Cleaney but am having trouble with some of the others.

Any help other E-sylumites can provide to fill in the rest would be greatly appreciated and would be happily shared with all.

The Newman Numismatic Portal link is:
https://nnp.wustl.edu/library/archivedetail/513266

To read the earlier E-Sylum article, see:
NEWMAN PORTAL ADDS MINT CABINET ACCESSION BOOK, 1856-1903 (www.coinbooks.org/esylum_v18n52a03.html)