M E Jenks was a Special Agent for the Pension Office. He investigated a number of pensions relevant to the 91st Pennsylvania. I've found very little about him.
pensions investigated
- Ambrose Baker (C)
- 20-27 October 1878
- whether Mary Baker had remarried (under common law)
- Mary Baker was dropped from the pension rolls
- Christian L Lawrence
- January 1877
- whether Sarah Lawrence had remarried
- Sarah Lawrence was dropped from the pension rolls, and prosecuted for having drawn pension money illegally
- William B Miller
- March 1879
- whether Eliza Jane Miller had remarried
- Eliza Jane Miller was dropped from the pension rolls
- Isaiah Collins
- 21-23 September 1880
- whether Isaiah Collins's death was caused by a disease contracted in the service
- investigation rated "Fair"
- Barbara Collins was restored to the pension rolls (apparently against Jenk's recommendation)