of his fifty-year career, Baldwin designed some 500 churches, banks, office buildings, warehouses, railroad stations, municipal and public buildings, hospitals, schools, clubs, and residences. His work can be found from New York to Ohio, and from Pennsylvania to Georgia, though eighty percent of his work can be found in Maryland. About 150 of those buildings still stand. Railroad structures In 1872, Baldwin was appointed the head architect for the Baltimore and Ohio Railroad, a position previously held by John Rudolph Niernsee, his mentor. Over the next 25 years he designed stations and other structures for the railroad, including many of its most famous buildings. Perhaps the best known are the passenger and freight car shops at Mount Clare Shops established in 1829 by the railroad at its beginnings in 1829 in southwest Baltimore that includes his 1884 central roundhouse at the current B&O Railroad Museum (established 1953), the B&O passenger station (1875) at Point of Rocks, Maryland and the immensely long B&O Warehouse (1905) adjacent to Camden Street Station (now at the Camden Yards sports stadiums complex in downtown Baltimore. Other surviving Baldwin stations can be found in: Rockville, Maryland (1873). Moved and converted to law offices. NRHP 74000961 Keyser, West Virginia (1875), a brick station built in 1875. Mount Airy, Maryland (1876). Hancock, West Virginia (1876), known as Brosius Station, after the original name of its location. Baltimore and Ohio Railroad company offices, Baltimore, Maryland Paw Paw, West Virginia (1882) Lexington, Virginia (1883). Moved, currently the headquarters of Omicron Delta Kappa leadership honor society Mountain Lake Park, Maryland (1884), a large wooden station. Laurel, Maryland. The Laurel Railroad Station (1884) was added to the National Register of Historic Places in 1973. NRHP 73002165 Gaithersburg, Maryland (1884). The Gaithersburg B&O Railroad Station and Freight Shed was added to the National Register of Historic Places in 1978. NRHP 78001473 Sykesville, Maryland (1884) was made into a notable model railroad kit. Morgantown, West Virginia (1884), much modified, currently a visitor's center. Oakland, Maryland (1885) NRHP 74000953 Homeland, Baltimore, Maryland (1888) station built for the Maryland Central Railway, now a private residence. Germantown, Maryland is a reconstruction; the original (1891) was destroyed by arson in 1978. Kensington, Maryland (1891) NRHP 80001827 Dickerson, Maryland (1891); heavily damaged by fire in the late 1970s/early 1980s, it was extensively rebuilt. Frostburg, Maryland (1891), a wooden station built for the Cumberland and Pennsylvania Railroad in 1891. Brunswick,