Yes, you can post books back - to ensure the items are removed from your account as quickly as possible please return them to the Information Commons.
Please address your book(s) to:
Information Commons, The University of Sheffield, 44 Leavygreave Road, Sheffield S3 7RD
It is advisable to obtain a proof of posting certificate, or alternatively, you may wish to send the books by Recorded Delivery. The books remain your responsibility until they have been discharged from your Library Account.