He has written articles and given presentations on the subject. He curated an exhibit on security engraving at The Grolier Club in 1991 and also curated the 200th Anniversary of American Bank Note Company exhibit at the Museum of American Financial History in 1995. He is particularly interested in documenting the picture engravers, vignette artists, and bank note companies, and is one of the few people interested in collecting and researching all periods of the work.