Source Information
Ancestry.com. B. and M. Gratz : merchants in Philadelphia, 1754- 1798 [database on-line]. Provo, UT: Ancestry.com Operations Inc, 2005.Original data: B. and M. Gratz : merchants in Philadelphia, 1754- 1798 : papers of interest to their posterity and the posterity of their associates. Jefferson City, Mo.: H. Stephens Printing Co., 1916.
