Maps.com (Firm) & ebrary, Inc. (2000). Expansion of railroads to 1860. Maps.com.
Chicago-čujuhus (17. p.)Maps.com (Firm) juo Inc ebrary. Expansion of Railroads to 1860. [S.l.]: Maps.com, 2000.
MLA-čujuhus (9. p.)Maps.com (Firm) juo Inc ebrary. Expansion of Railroads to 1860. Maps.com, 2000.
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