Some locations include Claypool, Continental, Fort Wayne, and Argos. Available at the Allen County Public Library . Fortunately a few photographers had the foresight to record Indiana's interurban system before it completely disappeared in the 1940's. Available at the Allen County Public Library. The West End Morning Sun Books - c.1991 by Larry De Young Plenty of great color photos taken in Indiana on the line, mostly in the latter years of operation.
Nice maps show where everything used to run in and around the city.
Available at the Allen County Public Library . This book explains short-lived Indiana railroads that disappeared in the early part of the 20th Century. Available at the Allen County Public Library. Extremely detailed book about how the Indiana Railroad formed and what its operations were like in the state. Check out the detailed description of a derailment on the Northern Division south of Garrett in 1936.