U.S. Department of Education Open Textbooks Pilot Program
The USDE funded an open textbook pilot program in July 2018 to support "projects at institutions of higher education that create new open textbooks or expand their use of open textbooks while maintaining or improving instruction and student learning outcomes." There was a very short turnaround for this grant cycle (August 29, 2018); however, interested parties should begin putting together a team and a proposal for the next grant cycle, in the event funding for the program is continued next fiscal year.
See the Federal Register notice (Federal Register /Vol. 83, No. 146 /Monday, July 30, 2018 /Notices) for a description of the current program.