00742cam a22002052  4500001001300000003000500013005001700018008004100035040001800076086002000094099002000114245014700134260003100281300001000312500004400322650004800366710008500414949001800499999001900517hsl000704660DGPO20170826152503.0100713s1919    dcu          f000 0 eng d  aGPOcGPOdMvI0 aY 4.IN 8/4:SI 6  aY 4.IN 8/4:SI 600aE.M. Boynton single-track railway patents as applicable to present systems of railway transportation :bhearings on H.R. 12870, Feb. 15, 1919.  a[Washington, D.C.],c1919.  a24 p.  aCRDP Program Historic Shelflist record. 0aMonorail railroadszUnited StatesvPatents.1 aUnited States.bCongress.bHouse.bCommittee on Interstate and Foreign Commerce.  aBEVbFed Docs  c262551d262551