A nice touch in this unbranded textbook is the highlighted definitions.
Product Tag: Joshua M. Silverstein
Problems in Contract Law: Cases and Materials by Knapp, Crystal. Aspen. 10th Ed.
The new edition adds new appendices with useful reference data.
Problems in Contract Law Cases & Materials 10th Ed Knapp 9781543856309 Hardcover
What stands out about this new edition is the refreshed chapter titles.