Sales Teaching Materials - American Casebook Series Author:Richard E. Speidel Also includes new materials on Article 2A on leases of goods, letters of credit, and nature and sources of commercial law. Covers the agreement, contract formation, and potentially adverse bearing of "pre-contract" facts and events upon the agreement. Looks at the effect of open terms and reserved discretion. Includes excuse from or adjusment of... more » the contract for changed circumstances. Discusses the post-agreement/pre-shipment stage, buyer's breach, and seller's repudiation.« less