To construct your search to find your map, there is some specific terminology you will have to use. These are the terms you will need to use in keyword strings to retrieve your records. Basically they include phrases or words that may be a part of a subject heading or may occur elsewhere in the record. The terms also may describe certain kinds of works that often contain maps. These terms are (in no particular order):
(description and travel)
(cities and towns)
Using Boolean operators you will combine these terms with your geographical term for home. Remember to try for your specific term (Ostrander) but be prepared to use a broader term (Ohio) in order to retrieve items that may have maps of your area.