The Elkhart County Genealogical Society (http://www.rootsweb.com/~inelkhar/ecgs.htm) has just published Prairie Street Cemetery by Patricia K. Johnson and Jeffrey L. Keim. The cemetery was formed by the Prairie Street Mennonite Church in 1895 and in 1998, the church donated the cemetery to the city of Elkhart. The book (which is 318 pages and includes over 21,000 names in the index) contains information on over 11,000 burials from 1895 through 2006. The names of spouses or parents are often included in the information.
Copies of the book are available for $45 + $4 shipping & handling (Indiana residents must add $2.70 for sales tax). Make checks payable to Elkhart County Genealogical Society and mail to: Publications, Elkhart County Genealogical Society, P.O. Box 1031, Elkhart IN 46515-1031.