Fortin, Gerry. The Definitive Resource for Liberty Seated Dime Variety Collectors. A web-book dedicated to Liberty Seated Dime varieties is available at
Brunner, Lane and Frost, John. Double Dimes - the United States Twenty-cent Piece. A web-book dedicated to the twenty-cent piece, and a
complete online version of the Print Edition, is available at www.doubledimes.com.
Osburn, Dick and Cushing, Brian. A Register of Liberty Seated Dollar Varieties. A web-book dedicated to the Liberty Seated Dollar, currently
being developed and edited, is available at www.seateddollarvarieties.com. While being edited
and completed, all known die marriages for each issue, both proofs and circulation strikes, are populated on the website.
The E-Gobrecht, regularly published since January 2005. The electronic publication of the LSCC that is available on this website
and described in detailed at the E-Gobrecht Archives link here, or in the navigation above.
Wiley, Randy and Bugert, Bill. The Complete Guide to Liberty Seated Half Dollars. David Lawrence Rare Coins has made available an
online version of this reference at www.davidlawrence.com/books/
Bowers, Q. David. Silver Dollars & Trade Dollars of the United States: A Complete Encyclopedia. PCGS has made available an online
version of Volume One at www.pcgs.com/books/silver-dollars/