Crotch was the author of a number of books, including Checklist of the Coleoptera of America (1873) and A revision of the Coleopterous family Coccinellidae (1874).
Crotch ist Autor einer Reihe von Büchern, darunter Checklist of the Coleoptera of America (1873) und A revision of the Coleopterous family Coccinellidae (1874).