Helfer, J.R. (1963).

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How to know the grasshoppers, cockroaches and their allies by J.R. Helfer (1963)

Published by W.C. Brown Co., Iowa, USA. This 353 page book has ten pages on common USA mantids and includes a key and illustrations of 18 species. Out of print but occasionally available second-hand.

Taxonomic name: 
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith