Maurice Sendak (1928-2012)
ezs note:  This is a new piece, borrowing Wikipedia's list of anniversaries of LGBT+ and advocates.   This is a wide list, but it is by no means exhaustive.  You can help by adding to the list of notables.  In the meantime, enjoy! 
PS - In honor of Sendak's book, "In The Night Kitchen" which was (of course) banned by some libraries, here is a listing of "100 most frequently banned books 1990-1999".  If your library refuses to list any of these books, demand to know WHY.  For more info, press www.ala.org. 
Banned Books 1990-1999
- Scary Stories (series), by Alvin Schwartz
 - Daddy’s Roommate, by Michael Willhoite
 - I Know Why the Caged Bird Sings, by Maya Angelou
 - The Chocolate War, by Robert Cormier
 - The Adventures of Huckleberry Finn, by Mark Twain
 - Of Mice and Men, by John Steinbeck
 - Forever, by Judy Blume
 - Bridge to Terabithia, by Katherine Paterson
 - Heather Has Two Mommies, by Leslea Newman
 - The Catcher in the Rye, by J.D. Salinger
 - The Giver, by Lois Lowry
 - My Brother Sam is Dead, by James Lincoln Collier and Christopher Collier
 - It’s Perfectly Normal, by Robie Harris
 - Alice (series), by Phyllis Reynolds Naylor
 - Goosebumps (series), by R.L. Stine
 - A Day No Pigs Would Die, by Robert Newton Peck
 - The Color Purple, by Alice Walker
 - Sex, by Madonna
 - Earth’s Children (series), by Jean M. Auel
 - The Great Gilly Hopkins, by Katherine Paterson
 - In the Night Kitchen, by Maurice Sendak
 - The Witches, by Roald Dahl
 - A Wrinkle in Time, by Madeleine L’Engle
 - The New Joy of Gay Sex, by Charles Silverstein
 - Go Ask Alice, by Anonymous
 - The Goats, by Brock Cole
 - The Stupids (series), by Harry Allard
 - Anastasia Krupnik (series), by Lois Lowry
 - Final Exit, by Derek Humphry
 - Blubber, by Judy Blume
 - Halloween ABC, by Eve Merriam
 - Julie of the Wolves, by Jean Craighead George
 - Kaffir Boy, by Mark Mathabane
 - The Bluest Eye, by Toni Morrison
 - What’s Happening to my Body? Book for Girls: A Growing-Up Guide for Parents & Daughters, by Lynda Madaras
 - Fallen Angels, by Walter Dean Myers
 - The Handmaid’s Tale, by Margaret Atwood
 - The Outsiders, by S.E. Hinton
 - The Pigman, by Paul Zindel
 - To Kill a Mockingbird, by Harper Lee
 - We All Fall Down, by Robert Cormier
 - Deenie, by Judy Blume
 - Flowers for Algernon, by Daniel Keyes
 - Annie on My Mind, by Nancy Garden
 - Beloved, by Toni Morrison
 - The Boy Who Lost His Face, by Louis Sachar
 - Cross Your Fingers, Spit in Your Hat, by Alvin Schwartz
 - Harry Potter (series), by J.K. Rowling
 - Cujo, by Stephen King
 - James and the Giant Peach, by Roald Dahl
 - A Light in the Attic, by Shel Silverstein
 - Ordinary People, by Judith Guest
 - American Psycho, by Bret Easton Ellis
 - Brave New World, by Aldous Huxley
 - Sleeping Beauty Trilogy, by A.N. Roquelaure (Anne Rice)
 - Bumps in the Night, by Harry Allard
 - Asking About Sex and Growing Up, by Joanna Cole
 - What’s Happening to my Body? Book for Boys: A Growing-Up Guide for Parents & Sons, by Lynda Madaras
 - The Anarchist Cookbook, by William Powell
 - Are You There, God? It’s Me, Margaret, by Judy Blume
 - Boys and Sex, by Wardell Pomeroy
 - Crazy Lady, by Jane Conly
 - Athletic Shorts, by Chris Crutcher
 - Killing Mr. Griffin, by Lois Duncan
 - Fade, by Robert Cormier
 - Guess What?, by Mem Fox
 - Slaughterhouse-Five, by Kurt Vonnegut
 - Lord of the Flies, by William Golding
 - Native Son, by Richard Wright
 - Women on Top: How Real Life Has Changed Women’s Fantasies, by Nancy Friday
 - Curses, Hexes and Spells, by Daniel Cohen
 - On My Honor, by Marion Dane Bauer
 - The House of Spirits, by Isabel Allende
 - Jack, by A.M. Homes
 - Arizona Kid, by Ron Koertge
 - Family Secrets, by Norma Klein
 - Mommy Laid an Egg, by Babette Cole
 - Bless Me, Ultima, by Rudolfo A. Anaya
 - Where Did I Come From?, by Peter Mayle
 - The Face on the Milk Carton, by Caroline Cooney
 - Carrie, by Stephen King
 - The Dead Zone, by Stephen King
 - The Adventures of Tom Sawyer, by Mark Twain
 - Song of Solomon, by Toni Morrison
 - Always Running, by Luis Rodriguez
 - Private Parts, by Howard Stern
 - Where’s Waldo?, by Martin Hanford
 - Summer of My German Soldier, by Bette Greene
 - Tiger Eyes, by Judy Blume
 - Little Black Sambo, by Helen Bannerman
 - Pillars of the Earth, by Ken Follett
 - Running Loose, by Chris Crutcher
 - Sex Education, by Jenny Davis
 - Jumper, by Steven Gould
 - Christine, by Stephen King
 - The Drowning of Stephen Jones, by Bette Greene
 - That Was Then, This is Now, by S.E. Hinton
 - Girls and Sex, by Wardell Pomeroy
 - The Wish Giver, by Bill Brittain
 - Jump Ship to Freedom, by James Lincoln Collier and Christopher Collier