The address for the Valley Forge site is http://valleyforgemusterroll.org/ I found the following info on a Jack Sisson. Cathy ID: RI29601 Last Name: SISSON First Name: JACK Suffix: Rank: Private Rank Type: Rank and File Ethnicity: Brigade: Varnum Company: CAPTAIN JOHIN S. DEXTER Monthly Muster Roll Status -------------------------------------------------------------------------------- December 1777: January 1778: February 1778: March 1778: April 1778: May 1778: June 1778: