Lawrence is a pen name for David Feigenbaum. Born in New York City. Received degree in mechanical engineering from Cornell University. Received M.S. and Ph.D. in oceanography from the University of Miami. Married Lynn Friedhoff in 1963. They have a son and a daughter.
Coin collector since 1951. Established David Lawrence Rare Coins (DLRC) in 1979 specializing in Barber coins. Co-founder of the Barber Coin Collectors Society in 1989.
David and son John are owners of DLRC Press. Since 1991 they have published the "Complete Guide to" series with books by Al Blythe, Bruce Fox, Brian Greer, David Lange and Lawrence. They also published the 1992 Van Allen/Mallis book on silver dollars.
Lawrence is the author of Complete Guide to Barber Dimes, Complete Guide to Barber Quarters and Complete Guide to Barber Half Dollars.
In 2008 Feigenbaum purchased PCI and renamed it Dominion Grading Service.
Bio by correspondence, 1993Source credit: Pete Smith, American Numismatic Biographies