Have you seen "The
Iowa Department of the Grand
Army of the Republic," compiled by Jacob A. Swisher? It was published in 1936 by The State Historical Society of
Iowa. It includes a discussion of the early difficulties of establishing/maintaining the
Iowa Department. It then goes on to include a full-page picture of each Department
Commander and a one-page summary of his life and war record; starting with James C. Parrott and continuing through Jonathan C. Hanes.
I have a copy - let me know if there is anyone you are looking for.