Courtesy of Doug Winter, a number of volumes on U.S. gold coins are now available on Newman Portal. Winter has done much to popularize collecting ofrare and better-date 19th century U.S. gold, and a good deal of his knowledge has been distilled into these books. While an Eliasberg-like quest of collectingthe entire series is out of reach of most, there are many approaches to collecting gold coins that need not require filling every hole in one's double eaglealbum.

Collecting by branch mint is one popular approach, and indeed, this is a notion that Winter reinforces by publishing texts on a branch mint basis. NewOrleans Gold Coins, 1839-1909, for example, discusses the New Orleans series on a date and mintmark basis, exploring rarity profiles, strikingcharacteristics, and die varieties for each issue. Anyone interested in beginning a collection of similar coins will do well to consult these works.

1850-O $20 NGC AU53 from Newman V (Heritage Auctions, 11/2014, lot 3335, realized $12,925).

Link to Doug Winter books on Newman Portal:
https://nnp.wustl.edu/library/booksbyauthor/2037