I am looking to create a master file that references multiple libraries. The reason for the multiple libraries, as opposed to putting all in one, is to keep the numbering system of each intact. Each library has a numbering system that starts with letters then has a five digit number; i.e. KP - 00001. The lettering is unique per library. The only interaction between the master and the others is an in/out check box. What might be the best solution for this? Thanks for any help.