The Rev. Gustavus L. Foster, pastor of the Presbyterian church in Ypsilanti, wrote a history in 1857 of The Past of Ypsilanti which focused on the history of various churches in the area.
Foster was a regent of the University of Michigan from 1850 to 1852.
- Foster, G. L. 1857. The past of Ypsilanti: a discourse delivered on leaving the old Presbyterian Church edifice, Lord's day, September 20th, 1857 : also, an appendix containing a history of schools, secret societies, &c. Detroit: Fleming & Davis. OCLC 2459843; online at Google Books