IN THE UNITED STATES. 



847 



Locality. 



Authority. 



Feet. 



Big Dam, York County, chisel mark on corner U. S. G. S 490 



stone at crossroads. 



Bigler N. Y. C. & H. R. R. R 1,668 



Biglerville P. & R. Rwy 649 



Big Mine Run Junction P. & R. Rwy 945 



Big Mountain U. S. G. S 1, 624 



Big Run B., R. & P. Rwy 1,286 



Big Shanty E. R. R 1, 722 



Big Shiney Mountain U. S. G. S 2, 320 



Big Spring Gap, Cambria County U. S. G. S 2, 601 



Bingen P. & R. Rwy 348 



Bird-in-Hand P. R. R . 360 



Do copper bolt in doorsill of freight P. R. R 364 



station. 



Birdsboro jP.&R. Rwy 173 



Do j P. R. R 190 



Do. .copper bolt in east pier of bridge at j P. R. R 188 



station. 



Birdsboro Junction I P. & R. Rwy 173 



Birmingham, Allegheny County. P., C., C. & St. L. Rwy 764 



Do Fourteenth street P., C., C. & St. L. Rwy 800 



Do Eighteenth street P., C., C. & St. L. Rwy 793 



Do Twenty-second street P., C., C. & St. L. Rwy 784 



Do Thirtieth street P., C., C. & St. L. Rwy 759 



Do copper bolt in west retaining P., C., C. & St. L. Rwy 763 



wall of Brownsville avenue 

 bridge. 



Do. . . ,. .B. M. on west pier of Fourteenth P., C., C. & St. L. Rwy 801 



street bridge. 



Do B.M. on corner of office Twenty- P., C., C. & St. L. Rwy 786 



second and Josephine streets. 



Birmingham, Huntingdon County P. R. R 868 



Do copper bolt in north end of arch. P. R. R 867 



Bitner B. & O. R. R 2, 031 



Bixler, copper bolt in retaining wall at troughs . P. R. R 476 



Black Creek Junction L. B. R. R 1, 015 



Black Crossing B. C. R. R 1, 254 



Black Diamond, P. R. R U. S. G. S 754 



Blacklick station, P. R. R U. S. G. S 967 



Blacks A. V. Rwy 919 



Blacks Run, A. V. Rwy., bronze tablet on U. S. G. S 771 



milepost south of Allegheny 

 River bridge. 



Black Walnut L. V. R. R | 649 



Blackwood Junction L. V. R. R j 693 



Blair, Allegheny County, P. R. R U. S. G. S 758 



Blair Furnace P. R. R 1,115 



Do copper bolt in doorsill of station. P. R. R , 118 



Blairs, Clarion County I B. & O. R. R ,169 



Blairsville, chisel mark on P. R. R. station U. S. G. S ,012 



foundation. 



Do Maple street crossing U. S. G. S ,011 



Do aluminum tablet on Walnut street \ U. S. G. S ,003 



bridge. 



Blairsville intersection P. R. R ,114 



Do square cut on monument at tool P. R. R , 120 



house. 



Blandon P. & R. Rwy 416 



Bloom B., R. & P. Rwy 1,469 



Bloomsburg B. & S. R. R...' 484 



Elevation. 



