Roster and Record of Iowa Soldiers in the War of the Rebellion... 1861-1866

(Published by the Iowa General Assembly from 1908-1911)

Volume 1 - Infantry Regiments 1-8

Volume 2 - Infantry Regiments 9-16

Volume 3 - Infantry Regiments 17-31

Volume 4 - Cavalry Regiments 1-9

Volume 5 - Infantry Regiments 32-48,
                 - African Infantry 1st Regiment,
                 - Light Artillery Batteries 1-4

Volume 6 - Mexican War,
                 - Indian Campaigns,
                 - Spanish American & Phillippine Wars

[Example of soldier information from Vol.2, p.936 -
EMBREE, Daniel, age 21, residence Indianola, Warren Co., nativity Illinois, Sixth Corporal, enlisted October 19, 1861, Company G, 15th Regiment Iowa Volunteer Infantry, promoted Fifth Sergeant February 1, 1862, to Second Sergeant October 4, 1862, to Second Lieutenant March7, 1863, to First Lieutenant August 27, 1864, but declined the commission, and was mustered out at close of term, December 18, 1864.]

Complete text of these books are available
and linked to archive.org