Research Databases: D

List of research database titles, descriptions and links
Screenshot of Reference USA

Data Axle (formerly Reference USA)

Directory information for 11 million U.S. businesses and 120 million U.S. households. Search for businesses by SIC code, sales volume number of employees and more. Search for residence directory information by name, location or phone number

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Driving test

Driving-Tests.org

Take practice tests for car, motorcycle, and commercial driver's licenses.  Tests can be accessed from any computer or mobile device.  In addition, there are official Ohio driver's manuals and a DMV office finder.  

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