There are many resources available for studying local history, whether it is Cincinnati or your hometown.
As you get started on your project, think about these questions:
Xavier University Library has a large collection of publications about Cincinnati history. You can search for them in the library catalog using the subject headings in addition to the name of the person, organization, event or topic you are researching:
Looking for more help on how to do local history, check out Carol Kammen's book On Doing Local History (E180 .K28 2014)
When researching local history, consider the public libraries, museums, universities, historical societies, and other cultural heritage institutions in a geographic area. Make a list and start searching for their websites! The majority will have a website with information about their historical resources, often under the tabs titled "Collections" or "Research". Some of those resources may be available online, but you made need to physically visit a repository in order to use most materials. When searching for historical primary sources from your local institutions, it's helpful to search using the keywords "primary sources," "archives," "special collections," or "digital collections." For instance, a Google search of "Chicago History Museum" and "Digital collections" brings up a result for their online image database.
Maps, atlases, city directories, and other related materials are essential for understanding the development and transition of a geographical area.
To find maps in the library catalog, use "maps" as a keyword. For directories, use " Directories" and the name of the city.
WPA Guides:
Starting in the 1930s, the Federal Writers' Project of the Works Progress Administration compiled a series of guides to states and important cities in the U.S. They are known as the "American Guides Series" or as the "WPA guides." There is a complete list in Wikipedia (http://en.wikipedia.org/wiki/American_Guide_Series). Many if not all have been digitized and can be found at http://archive.org/details/federal_writers_project
For more information see also http://www.senate.gov/reference/resources/pdf/WPAStateGuides.pdf