Alan P.Beall;60;of River Hill;Forward Township;died unexpectedly Tuesday;Aug.27;1996;in Mon Valley Hospital. He was born March 17;1936;in Homestead;a son of Samuel K.Beall of Baltimore;Md.;and the late Dorothy Samoda Beall. He was a self-employed advertising writer in the Pittsburgh area;and his most recent project was the Whiskey Rebellion Festival in Monongahela. He was a graduate of the then-California State College. He served in the U.S.Navy Reserve before joining the U.S.Air Force. Protestant by faith;he was a member of the American Legion Post 302. Survivors include his wife;Sheila Cullen Beall;whom he married on May 16;1959;four sons;Brad P.Bell of Monongahela;Christopher S.Beall of Willard;Md.;Steven J.Beall of Norristown and Nathaniel W.Beall of Monongahela;one daughter;Kimberly Costello of Youngsville;N.C.;and four grandchildren;Jessica Kibe;Melissa and Patrick Beall;and Nicolas Costello. In addition to his mother;he was preceded in death by one brother;Samuel K.Beall. Friends will be received Wednesday from 7 to 9 p.m. and Thursday from 2 to 4 and 7 to 9 p.m.in the Marshall Marra Funeral Home;216 Chess St.;Monongahela;where funeral services will be held at 11 a.m. with the Rev.Bill Bailey officiating. Burial will be in Belle Vernon Cemetery. The Marshall Marra Funeral Home is in charge of the arrangements.