Please send questions or comments about LinkOut, Outside Tool, and Document Delivery Service (DDS) to lib-linkout@ncbi.nlm.nih.gov.

U.S. libraries may also call the NN/LM at 1-800-338-7657 for assistance. When calling NN/LM, ask for your regional LinkOut representative.

LinkOut libraries should also sign up for the library-linkout announcement mailing list and the LinkOut listserv discussion list.