The deadline for grant applications is September 15, 2011 (for the U.S. and Canada competition). Here is a summary of the program.
The John Simon Guggenheim Memorial Foundation provides fellowships for advanced professionals in all fields (natural sciences, social sciences, humanities, creative arts) except the performing arts. The fellowships are intended to further the development of scholars and artists by assisting them to engage in research in any field of knowledge and creation in any of the arts, under the freest possible conditions.
Fellowships are awarded through two annual competitions. Fellowships are grants to selected individuals made for a minimum of six months and a maximum of twelve months. Since the purpose of the program is to help provide fellows with blocks of time in which they can work with as much creative freedom as possible, grants are made freely. No special conditions attach to them, and fellows may spend their grant funds in any manner they deem necessary to their work.
The amounts of grants vary, and the foundation does not guarantee it will fully fund any project. Working with a fixed annual budget, the foundation strives to allocate its funds as equitably as possible, taking into consideration the fellows' other resources and the purpose and scope of their plans. Members of the teaching profession receiving sabbatical leave on full or part salary are eligible for appointment, as are those holding other fellowships and appointments at research centers.
The full RFP is here. There are approximately 220 fellowships up for grabs, so folks with sabbaticals, leaves, etc. may want to check this out.