Get inspiration and support for crafting and measuring more authentic and successful primary source-based library instruction. Although the Guidelines for Primary Source Literacy presented rough objectives in 2018, more specific, assessable learning outcomes need to be honed at the library session, assignment, or tutorial level. Attendees will leave with a toolbox containing a wide variety of outcome examples, reusable planning blueprints, lightweight assessment methods mapped to observable learning verbs, plans for staff and faculty development, and potential sites for sharing findings widely.