http://www.house.gov/murtha/write.shtml
I'm still serching for zip codes.
ZIP Codes: 15012, 15022, 15030, 15033, 15038, 15062-63, 15067-68, 15072, 15083, 15087, 15089, 15301, 15310, 15313-17, 15320, 15322, 15324-25, 15327, 15329-34, 15336-38, 15341-42, 15344-49, 15351- 54, 15357-60, 15362-64, 15366, 15368, 15370, 15377, 15380, 15401, 15410-13, 15415, 15417, 15419-20, 15422-25, 15427-36, 15438, 15442-44, 15446-47, 15449-51, 15454-56, 15458, 15460-61, 15463, 15466-68, 15472-77, 15479-80, 15482-86, 15488-90, 15492, 15501-02, 15520, 15531, 15541, 15544, 15547-48, 15551, 15555, 15557, 15561, 15563, 15601, 15610, 15613, 15618, 15620-22, 15624-25, 15627, 15629, 15631, 15633, 15635, 15637, 15641-42, 15644, 15646, 15650, 15655-56, 15660-62, 15664, 15666, 15670-71, 15673-74, 15677-78, 15680-90, 15701, 15705, 15710, 15714, 15717, 15722, 15728, 15732, 15736-37, 15745, 15748, 15760-62, 15765, 15773-74, 15779, 15901-02, 15904-07, 15909, 15921-23, 15925, 15927-28, 15930-31, 15934-38, 15940, 15942-46, 15948, 15951-63, 16023, 16055, 16201, 16212, 16215, 16226, 16228-29, 16236, 16238, 16240, 16249, 16262, 16630, 16641, 16668-69