Paul, does this mean that when you add MARC records it automatically knows the LC number is to be there? thanks ! Ed Hi everybody, Here is the solution I propose for LC and any other callnumber : * a field has already been added in items table. It's called itemcallnumber. * this field will be "connected" to : biblio dewey OR LoC number OR manual & local classification. if connected to dewey or LoC, it will automatically be filled. So every library can have it's own callnumber system. Sounds this good ?