Gill Foundation.
note: "...to secure equal opportunity for all people, regardless of sexual orientation or gender identity...by providing grants...strengthening leadership and managerial skills...increasing financial resources...building awareness of the contributions...of diverse sexual orientations and gender identities...
http://www.gillfoundation.org
Pride Foundation (Seattle)
note: funds organizations and scholarships in Alaska, Idaho, Montana, Oregon, and Alaska
http://www.pridefoundation.org/
Uncommon Legacy Foundation (U.S.)
note: offers scholarships and grants; "...a nonprofit foundation dedicated to enhancing the visibility, strength and vitality of the lesbian community...;" site includes list of previous recipients, mostly in education, civil rights and health, but also culture.
http://www.uncommonlegacy.org