The public record information return that all private foundations are required by law to submit annually to the Internal Revenue Service.
Write Winning Proposals includes the concept of "form 990-PF" in its proposal-writing strategies. The definition of "form 990-PF" as well as other definitions related to proposal-writing are among the many Write Winning Proposals resources, which also include these two free courses on grant writing:
Fundamentals of Grant Writing
This free primer is based on content from the government agency that catalogs the various federal assistance programs offered within the United States. What better way to learn how to write a grant than from the grant givers themselves! (...more)
Grant Writing Trade Secrets
Everything in this free guide is based on the real-life, first-hand, hands-on experience of successful grant-getters like Matthew Lesko and Donald Coggan. You'll find no useless untried theories - only stuff that has worked for decades and still works. (...more)