Before you send your "Last Pat" off to the publisher, you might check out these organizations:

Washington Area Writers: 204 Laverne St., Alexandria, Va. 22305.

President, Susan Katz, 548-1263.

Washington Independent Writers: National Press Building, Washington, D.C. 20045. Executive director, Isolde Chapin, 347-4973; Professional society for free-lancers. Members receive a monthly newsletter; monthly workshop series on topics of interest to writers; Job Bank tips members to available jobs; guide to local free-lance markets; social events; Legal Defense Fund.

Writer's League of Washington: 7602 Lynn Drive, Chevy Chase, Md.

20015. Secretary, Lola Dunn. Creative-writing contest every month.

Pat Hass Workshops: 333-4858. Professional-level group critiques for fiction/non-fiction. $200 for 10 weeks.

The Writer's Center: Glen Echo Park, Glen Echo, Md. Chairman, Allan Lefcowitz, (301) 229-0684. Courses in beginning/advanced fiction, non-fiction, drama, poetry, criticism. Series of workshops in graphic arts, ongoing readings of poetry and prose written by members. Members display and sell their books and magazines at the center, receive monthly newsletter, use of space for meetings and access to equipment.

Georgetown University Writers Conference: Georgetown University School for Summer and Continuing Education, Washington, D.C. 20057.

Director, Dr. Riley Hughes. Held on campus each July (abroad, each June) for published and unpublished writers.

January Writers' Conference: George Mason University, English Department, Fairfax, Va. 22030. 323-2220. Coordinator, Donald R. Galler. Held annually in January for published and unpublished writers.