Harvard Library licenses the entire McGraw Hill First Aid series.
This link will return most of the series, but not all of it. Please search the McGraw Hill collection for individual titles and topics. Selected materials are highlighted in the box below and on the Step 2 and Step 3 pages.
Both of these huge collections from the publisher McGraw Hill include books series and online tools to help you study for the clerkship and board exams. Here are some highlights
To access these collections you need to connect through the Harvard link AND you need to create a personal account. The publisher states that they require this so they can track the material you have studied and avoid repitition. Please inform a Countway librarian if you feel your personal account is abused by McGraw Hill.