Sears Building Concrete beams Concrete beams ledger Roller drawing secct.B shield Sears Building Sears Building Special concrete beams ledger Woodblock, paving plant at general yard Cutting rail with torch Cletrac tractor, Brighton Cletrac tractor, Brighton Cletrac tractor, Brighton Cletrac tractor, Brighton Cletrac tractor, side view Cletrac hauling road scraper Tractor, hauling portable truck Tractor, hauling protable truck Tractor hauling rail Scoop conveyor loading truck Scoop conveyor loading truck Koetiring Conveyor Machinery General yard untreated sawed ties, air seasoning, tie treating plant Adzing and loading ties tie treating plant general yard Treated hewn ties, area c, tie treating plant General yard Tie treating plant Tie treating plant Tie treating plant Tie-treating plant Tie-treating plant Tie-treating plant - treated ties Tie treating plant Track equipment - Dartmouth-Huntington frog Track equipment - Dartmouth-Huntington frog Track equipment - frog Track equipment - Dartmouth-Huntington frog Track equipment Group photo of men in two rows, seated & standing Group photo of men on an incline indoors Group photo of men on the street by a lamp post Group photo of men with a 4th Annual regatta banner in the background Group photo of women in hats and coats Group photograph of men in front of a bus Group portrait of unidentifed men by Fred? Stiles in front of Massachusetts State House Group portrait of unidentifed men standing at foot of staircase Group portrait of unidentified men in office Group portrait of unidentified men in office Group portrait of unidentified men on rooftop Group portrait of unidentified men on rooftop with Massachusetts State House dome in the background