This resource is designed to help users identify flint artifacts, which are some of the most enduring legacies of prehistoric peoples.
Includes 30 species and subspecies of snakes that are found in Ohio. Learn about Ohio snakes or use the program to identify one you have seen.
Identify and learn about common Ohio trees. By only knowing one part of a tree (leaf, fruit, etc.), you can follow the samples given until you can identify your tree.
An excellent way to get an authoritative and accessible overview of a subject.
Learn to speak a new language. Over 100 foreign language courses are available that can help you learn languages including French, German, Italian, Japanese, Korean, Russian, Spanish and Mandarin Chinese. There's also an ESL component that provides English language learning to speakers of over 25 different languages.
The Sanborn Maps are large scale street plans produced by the Sanborn Fire Insurance company from 1867 to 1970. Use these maps to locate and identify buildings and neighborhoods, to study the growth of towns and cities, and to study the impact of new developments.
Find addresses, phone numbers, toll free numbers, Web site URLs, financial information, median household income, median home value, and more.
Article citations can be used to obtain a copy of the article. Fill out the Periodical Article Request Information of our Interlibrary Loan form to submit a request.
Authoritative reference content exploring topics in humanities, social sciences, and science.