Book: Stopp, Klaus. 1998 The Printed Birth and Baptismal Certificates of the German Americans. 3.
• Published in Stopp 373.3, p. 59.Article: Rosenberry, Edward L. 1988 "G.S. Peters and his Joseph's Book of Many Colors". Der Reggeboge: Journal of the Pennsylvania German Society. 22 (1): 1-14.
• More info. on Peters.Article: Egle, William G. 1883 "Gustav Sigismund Peters". Der Deutsche Pioneer. 8: 307-311.