I felt the need to establish a sense of cultural placement and vocabulary so here are three paraphrased definitions from The Subjects of Art History- Historical Objects in Contemporary Perspective (Cheatham,Holly and Moxey, Cambridge University Press,1998) I read them as a time line of the coming-out of art.

Homosexualism - The Euro-American tradition of self-consciously - if obliquely -highlighting the homoerotic personal and aesthetic significance and historical meanings of works of art or other cultural forms...In the simplest formula, homosexualism is the personal testimony of homosexuals that they exist.

Gay and Lesbian Studies - Emerging in the second half of the twentieth century,fully accepting the reality of homosexuality whether or not previous generations would or could have done so. They (gay and lesbian art historians) are united by their common concern to establish gay and lesbian inquiry within the discipline in the discipline's own accepted and most legitimate or prestigious terms and formats.

Queer theory - acknowledges the peculiarity - the specificity, distinctiveness, and originality - of every sexual act and subjective position in relation to every other one and asserts that no such position could be a general model of all sexualities and subjectivities.