Harvard’s Negotiation Clearinghouse covers all kinds of negotiations. From the site:
Founded in 1986 as the first institution of its kind in the United States, the Clearinghouse serves as the Program on Negotiation’s educational resource center. The PON Clearinghouse develops and disseminates role simulations and other interactive teaching exercises as well as books, educational videos, curricular packages, and scholarly working papers. In addition, the Clearinghouse offers some materials and services free of charge, such as an online negotiation syllabus collection, online access to its Negotiation Pedagogy Video Series, and telephone consultations regarding pedagogical questions such as role simulation selection and course development. All PON Clearinghouse products have been developed or endorsed by PON faculty or affiliates.