Perhaps you should try some spelling variations:
volunteer kirk's » volunteer it's, volunteer workers, volunteer corps
kirk's regiment » king's regiment, ker's regiment, kerr's regiment
york volunteer » form volunteer, worker volunteer, mock volunteers
volunteer his » volunteer fish, volunteer iii, volunteer iv
his regiment » his retirement, first regiment, _ regiment

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (( 7th new york volunteer his regiment ) OR ( 7th new york volunteer kirk's regiment )).
• Adding a wildcard symbol may retrieve word variants: (( 7th new york volunteer his regiment ) or ( 7th new york volunteer kirk's regiment ))*.