Index to Illustrations in Indianapolis City Directories - Indianapolis City Directory Collection - Collections Hosted by the Indiana State Library
1850-1859 Timeline of Allen County, Indiana on Allen INGenWeb Project
Evansville Hoosier State Chronicles: Indiana's Digital Newspaper Program
Mill of N and W Sauer, Evansville, Randolph Co. Ill.
Topicmodels, topicmodels, … – Random experiments in software engineering
Gould's St. Louis Directory, for 1893 (For the Year Ending April 1st, 1894) - St. Louis Mercantile Library - Directories, Gazetteers, Rosters and Guides - Missouri Digital Heritage Hosted Collections
Indianapolis City Directory for 1951, Part 3 (covers other directories) - Indianapolis City Directory Collection - Collections Hosted by the Indiana State Library
MRRC and Railroad History Materials
Views on the Farm of Mrs. Elizabeth Wehrheim, Near Evansville, Randolph Co. Ill.
Evansville Vanderburgh Public Library - EVPL - OnGenealogy
Free Online Indiana City Directories – The Ancestor Hunt