This is the search box that appears on the Yale University Library home page. Use Quicksearch and enter search terms in the box to get started searching. Don't worry about being too precise at first; you can easily narrow down your results later by clicking on the results and using the choices on the left hand side.
In your results screen, you'll notice a quilt of results, in all kinds of genres and formats. Click on the column on the left to help narrow your results.
Use "subject browse" in the dropdown next to the search box to find books and enter headings like:
Subject headings will also subdivide. For example, People with disabilities includes the following sub-divisions:
Other keywords you might want to consider include: "Mad Studies," "Crip Theory," "Neurodiversity," "Universal Design," "Ableism," and "Disability Rights," "Universal Design for Learning," "Cognitive disability," "Sensory disability," "Accessibility," "Accessible technology," "Disability rights movement," "Mad people's history," "Independent Living Movement," "Eco-crip," and "Audism"
For those of you interested in searching medical literature, particularly databases like PubMed, use these subject terms to help identify materials on disability.