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Incoming Resources
- Index to the Tombstone, Arizona daily epitaph, 1884 ; The Tombstone, 1885 ; and the Tombstone daily record-epitaph, 1885, compliled & edited by Lonnie E. Underhill
- Tombstone, Arizona, a social history, 1879-1882, by Lonnie E. Underhill
- Genealogy records of the First Arizona Volunteer Infantry Regiment, by Lonnie E. Underhill
- The First Arizona Volunteer Infantry, 1865-1866, by Lonnie E. Underhill
- "Baptism of fire!", "Hell on earth!", Tombstone, Arizona fires, 1881-1882, by Lonnie E. Underhill
- Index to the Tombstone, Arizona, weekly and daily epitaph, compiled & edited by Lonnie E. Underhill
- Tombstone, Arizona biographical directory, compiled and edited by Lonnie E. Underhill
- Index to the Tombstone, Arizona, Daily nugget, compiled & edited by Lonnie E. Underhill
- Daring stage coach robberies, Cochise County, Arizona Territory, 1881-1882, by Lonnie E. Underhill