Central Region Pittsburgh Divison - A Block Stations & Interlockings Book of Drawings Last Revised 1977

Includes: (ACME, Harmarville, PA)(AJ, Kiskiminetas Jct, PA)(ALUM, East of Blairsville, PA)(APOLLO, East of West Apollo, PA)(BEALE, Kiskiminetas Jct, PA)(BLAIR, Blairsville, PA)(BROWN, Brownsville, PA)(California Spring Switch, California, PA)(CM, East Liberty, PA)(CQ, Pittsburgh, PA)(DR, Derry, PA)(ETNA, Etna, PA)(H, Shire Oaks, PA)(HARMAR, Harmarville, PA)(HARRIS, Harmarville, PA)(Indiana Wye, Indiana, PA)(JD, New Florence, PA)(KENNY, Duquesne, PA)(MC, Monongahela, PA)(NORTH BROWN, Brownsville, PA)(OB, Becks Run, PA)(PG, Duquesne, PA)(PITT, Pittsburgh, PA)(RG, Radebaugh, PA)(Roscoe Spring Switch, Roscoe, PA)(SZ, Trafford, PA)(TOMS, East of Blairsville, PA)(TRUXALL, West of Salina, PA)(U Jct, East Pittsburgh, PA)(UY, Aspinwall, PA)(VO (B&O), Butler, PA)(WEST BROWN, Brownsville, PA)(WK, Swissvale, PA)