Sponsored by the Advanced Placement Program of the College Board Primary sources such as membership cards, receipts, certificates, and more can provide insight into the interests, activities, and values of individuals who lived in the past. They can also inspire conversations with students about the benefits of association and collaboration, and they can motivate student research. In this roundtable, which will be followed by a hands-on workshop, Library of Congress education specialists will engage participants in teaching activities featuring compelling and unusual sources, and will provide tips and strategies for finding additional materials in the library's extensive digitized collections at www.loc.gov.