Elbert L. Little ; photos. by Sonja Bullaty and Angelo Lomeo, and others ; visual key by Susan Rayfield and Olivia BuehlKnopf : distributed by Random House1995
Harald A. Rehder, with photographs by James H. Carmichael, Jr. ; visual key by Carol Nehring and Mary Beth BrewerKnopf : Distributed by Random Housec1995