I have updated our Collections Management Policy to distinguish between object donations that are in our permanent collection and objects in a teaching/museum equipment category and now I am working on how to track them all differently. We put a T in front of the accession number for objects in our teaching collection (T2016.___) and the teaching collection items are tracked in Past Perfect. Our house museum is set up as a 1920s home and there are props like towels, vases, etc that are neither in our teaching nor permanent collection. These prop items are things we expect to remove if/when a historic donation of importance comes in that could replace them. What would you suggest I do to track these items so that the person after me does not confuse them with permanent or teaching items? I was thinking of assigning a prop number – Prop 1, Prop 2, etc and tracking them in Past Perfect. Thanks in advance for your help!