GAZETTEER OF MARYLAND 237
SOURCES OF INFORMATION

OFFICIAL GUIDE TO RAILWAYS—Published 1939 by the National Railway Publications,
New York City.

RAND MCNALLY WORLD ATLAS—Published 1931. (62nd Edition).

CENSUS OF THE UNITED STATES—Department of Commerce, Bureau of the Census
Reports for 1930 and 1940.

GAZETTEER OF MARYLAND—Published by Polk and Company, 1915-16-17.

UNITED STATES POST OFFICE GUIDE—Published 1934-1939.

AMERICAN EXPRESS COMPANY—New York City.

AMERICAN TELEPHONE AND TELEGRAPH COMPANY—New York City.

CIVIL AERONAUTICS AUTHORITY—Washington, D. C.

WESTERN UNION TELEGRAPH COMPANY.

UNITED STATES GEOLOGICAL SURVEY—Bulletins 226 and 231.

UNITED STATES GEOLOGICAL SURVEY and the MARYLAND GEOLOGICAL SURVEY—
Topographic Maps.

COUNTY HIGHWAYS MAPS—Prepared by the Maryland State Roads Commission in
cooperation with the Bureau of Public Roads of the U. S. Department of
Agriculture.

PRELIMINARY REPORT OF THE MARYLAND STATE-WIDE HIGHWAY PLANNING SURVEY—
By the Maryland State Roads Commission in cooperation with the Bureau of
Public Roads of the U. S. Department of Agriculture.

KEY TO RAILROAD B. & E. — Baltimore and Eastern R.R. B. & O. — Baltimore and Ohio R.R. B. & A. — Baltimore and Annapolis R.R. Canton — Canton Railroad C. R. — Castleman River R.R. C. & P. — Cumberland and Pennsylvania R.R. H. & F. — Hagerstown and Frederick R.R. M. & P. — Maryland and Pennsylvania R.R. W. B. & Pt. L.— Washington, Bran<

ABBREVIATIONS N. C. — Northern Central R. R. N. & W.— Norfolk and Western R.R. P. & B. R. — Patapsco and Back River R.R. Penna. — Pennsylvania R.R. W. M. — Western Maryland R.R. Preston — The Preston R.R. Co. E. W.— East Washington R.R. iywine and Point Lookout R.R.