U.S. Societies & Associations (P)

Parents, Families and Friends of Lesbians and Gays (1981): 1726 M St. N.W., Ste. 400, Washington, D.C. 20036. 77,000 households. Phone: (202) 467-8180. www.pflag.org.

Parents Without Partners (1957): 1650 South Dixie Hwy., Ste. 510, Boca Raton, Fla. 33432. 50,000+. Phone: (561) 391-8833. www.parentswithoutpartners.org.

Pathology, American Society for Investigative (1976): 9650 Rockville Pike, Bethesda, Md. 20814-3993. 2,300. Phone: (301) 634-7130. www.asip.org.

Peace Action (a merger of SANE and the Nuclear Weapons Freeze Campaign) (1957): 1100 Wayne Ave., Ste. 1020, Silver Spring, Md. 20910. 55,000. Phone: (301) 565-4050. www.webcom.com/peaceact.

People For the American Way (1980): 2000 M St. N.W., Ste. 400, Washington, D.C. 20036. 300,000. Phone: (202) 467-4999. www.pfaw.org.

Petroleum Geologists, American Association of (1917): 1444 South Boulder Ave., Tulsa, Okla. 74119. 31,500. Phone: (918) 584-2555. www.aapg.org.

Pharmaceutical Association, American (1852): 2215 Constitution Ave. N.W., Washington, D.C. 20037-2985. 50,000+. Phone: (202) 628-4410. www.aphanet.org.

Philatelic Society, American (1886): 100 Match Factory Place, Bellefonte, Pa. 16823. 55,000+. Phone: (814) 933-3803. www.stamps.org.

Photogrammetry and Remote Sensing, American Society for (1934): 5410 Grosvenor Lane, Ste. 210, Bethesda, Md. 20814-2160. 7,000+. Phone: (301) 493-0290; fax: (301) 493-0208. email: asprs@asprs.org. www.asprs.org.

Photographic Society of America (1934): 3000 United Founders Blvd., Ste. 103, Oklahoma City, Okla. 73112-3940. Phone: (405) 843-1437. www.psa-photo.org.

Photography, International Center of (1974): 1114 Ave. of the Americas, New York, N.Y. 10036. Midtown branch: 1133 Avenue of the Americas, New York, N.Y. 10036. Phone: (212) 857-0000. www.icp.org.

Physical Society, The American (1899): One Physics Ellipse, College Park, Md. 20740-3844. 41,000. Phone: (301) 209-3200. www.aps.org.

Physical Therapy Association, American (APTA) (1921): 1111 N. Fairfax St., Alexandria, Va. 22314-1488. 66,000+. Phone: (703) 684-2782. www.apta.org.

Physics, American Institute of (1931): One Physics Ellipse, College Park, Md. 20740-3843. 125,000. Phone: (301) 209-3100. www.aip.org.

Pilot International (1921): Pilot International Headquarters, 244 College St., P.O. Box 4844, Macon, Ga. 31208-4844. 25,000. Phone: (478) 743-7403. www.pilotinternational.org.

Planetary Society, The (1980): 65 N. Catalina Ave., Pasadena, Calif. 91106-2301. 100,000. Phone: (626) 793-5100. www.planetary.org.

Plan International (1937): P.O. Box 7670, 155 PLAN Way, Warwick, R.I. 02887. Phone: (401) 294-3693; fax: (401) 295-7062. www.plan-international.org.

Planned Parenthood® Federation of America, Inc., (1916): 434 West 33rd St. New York, N.Y. 10001. 150 affiliates. Phone: (212) 541-7800; fax: (212) 245-1845. www.plannedparenthood.org.

Plastics Engineers, Society of (1942): P.O. Box 403, 14 Fairfield Dr., Brookfield, Conn. 06804-0403. 32,000+. Phone: (203) 775-0471. www.4spe.org.

Police and Concerned Citizens, American Federation of (1966): American Police Hall of Fame, 6350 Horizon Dr., Titusville, Fla. 32780. 100,000. Phone: (321) 264-0911. www.aphf.org/p14_afop.html.

Police, International Association of Chiefs of (1893): 515 N. Washington St., Alexandria, Va. 22314-2357. 19,000+. Phone: (703) 836-6767. www.theiacp.org.

Political and Social Science, American Academy of (1889): 3814 Walnut St., Philadelphia, Pa. 19104-6197. Phone: (215) 746-6500. www.aapss.org/.

Political Science, Academy of (1880): 475 Riverside Dr., Ste. 1274, New York, N.Y. 10115-1274. 8,500. Phone: (212) 870-2500. www.psqonline.org.

Population Connection (formerly Zero Population Growth) (1968): 1400 Sixteenth St. N.W., Ste. 320, Washington, D.C. 20036. 55,000. Phone: (202) 332-2200. http://www.populationconnection.org/.

Prevent Blindness America (1908): 211 West Wacker Dr., Ste. 1700, Chicago, Ill. 60606. 21 affiliates and divisions. Phone: (800) 331-2020. www.preventblindness.org.

Professional Engineers, National Society of (1934): 1420 King St., Alexandria, Va. 22314-2794. 60,000. Phone: (703) 684-2800; fax: (703) 836-4875. www.nspe.org.

Professional Photographers of America, Inc. (1880): 229 Peachtree St. N.W., #2200, Atlanta, Ga. 30303-2206. 14,000. Phone: (404) 522-8600. www.ppa.com.

Psychiatric Association, American (1844): 1000 Wilson Blvd., Ste. 1825, Arlington, Va. 22209-3901. 40,537. Phone: (703) 907-7300. www.psych.org.

Psychoanalytic Association, The American (1911): 309 E. 49th St., New York, N.Y. 10017. 3,000+ psychoanalysts. Phone: (212) 752-0450; fax: (212) 593-0571. www.apsa.org.

Psychological Association, American (1892): 750 First St. N.E., Washington, D.C. 20002–4242. 159,000. Phone: (202) 336 5500; (202) 336-6123 TTY. www.apa.org.

Public Health Association, American (1872): 800 I St. N.W., Washington, D.C. 20001-3710. 50,000+. Phone: (202) 777-2742. www.apha.org.

Puppeteers of America (1937): P.O. Box 330, West Liberty, Iowa 52776. Phone: (888) 568-6235. www.puppeteers.org