and in 1827 the Lehigh Coal & Navigation Company built and began operating the 9 miles Summit Hill and Mauch Chunk Railroad, while also in 1827, Maryland and Virginia clear needs and issue the charter and rights-of-ways for the ambitious Baltimore and Ohio 21 &mdash; which becomes the (3rd or 4th) next operational railroad (depending upon how Liepers' withdrawal is counted and scored), running tests in 1829 about the time Leiper and Son are shifting from rail to canal and