The Eric P. Newman Numismatic Information Portal also has them
https://nnp.wustl.edu/library/publi...etail/518721as well as many, many others such as the Penny Wise from the EAC, the Gobrecht Journal, C4 for the colonials, etc. and it's growing daily. Just check out the periodical list, not to mention all the auction catalogs, and other archival stash of ephemera available.
Probably the single best reference site for US numismatics.

"Buy the Book Before You Buy the Coin" - Aaron R. Feldman - "And read it" - Me 2013!
ANA Life Member #3288 in good standing since 1981, ANS, Early American Coppers Member (EAC), Colonial Coin Collectors Club member (C4), Conder Token Collector Club member (CTCC), Civil War Token Society (CWTS) member, Liberty Seated Collectors Club (LSCC) & Numismatic Bibliomania Society member (NBS), USMex, Member in good standing, 2¢ variety collector.
See my want page:
http://goccf.com/t/140440