Perhaps you should try some spelling variations:
york volunteer » form volunteer, worker volunteer, mock volunteers
89th regiment » 11th regiment, 40th regiment, 58th regiment
its regiment » his regiment, das regiment, 6th regiment
9th regiment » 29th regiment, 11th regiment, 40th 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 ((its regiment) OR (((9th regiment) OR (89th regiment)))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "7th new york volunteer ((its regiment) or (((9th regiment) OR (89th regiment))))".
• Adding a wildcard symbol may retrieve word variants: 7th new york volunteer ((its regiment) or (((9th regiment) OR (89th regiment))))*.