#501 Congress Gold Co 1898 $75

#502 Connecticut Central RR 1989 $10

#503 Connecticut Co RR 1956 $2

#504 Connecticut River RR 1885 $27

#505 Connecticut Valley RR 1878 $22

#506 Connecticut Western RR 1874 $122

#507 Conrail 1977 $4

#508 Contoocook River RR 1858 $55

#509 Cooperstown & Charlotte Valley RR 1899 $115

#510 Cooperstown & Susquehanna Valley RR 1878 $77

#511 Copper Range RR 1930 $15

#512 Copper River & Northwestern RY 1927 $85

#513 Cornwall RR 1884 $63

#514 Cornwall RR 1890 $37

#515 Corvallis & Eastern RR 1907 $61

#516 Cornwall & Lebanon RR 1910 $50

#517 Coudersport & Port Allegany RR $142

#518 Covington, Columbus & Black Hills RR 1877 $150

#519 Covington & Macon RR 1888 $45

#520 Cowlitz, Chehalis & Cascade RY $75

#521 Crawford Transportation Co 1910 $38

#522 Cresson, Clearfield County & New York Short Route RR 1892 $78

#523 Cripple Creek & Colorado Springs RR 1917 $50

#524 Crosby Transportation Co 1908 $26

#525 Crystal City & Uvalde RR 1912 $240

#526 Cumberland & Maurice River RR 1887 $50

#527 Cumberland & Pennsylvania RR 1884 $110

#528 Cumberland & Tennessee Transportation Co 1906 $26

#529 Cumberland RY & Coal Co 1931 $8

#530 Cumberland Valley RR 1914 $15

#531 Cybur, Gulf & Northwestern RR 1916 $100

#532 Dakota Southern RR 1875 $135

#533 Dakota Southern & Sioux City & Pembina RR 1878 $35

#534 Dallas RY & Terminal Co 1934 $5

#535 Danbury & Norwalk RR 1885 $68

#536 Dansville & Mt Morris RR 1902 $6

#537 Danville, Hazelton & Wilkes Barre RR 1971 $155

#538 Danville, Olney & Ohio River RR 1882 $75

#539 Danville & South Western RR 1880 $30

#540 Danville & Western RY 1916 $50

#541 Dauphin & Susquehanna Co 1858 $48

#542 Davenport & Muscatine RY 1915 $26

#543 Davenport & St Paul RR 1874 $80

#544 Dayton & South Eastern RR 1879 $84

#545 Dayton & Western Traction Co 1932 $55

#546 Dayton & Union RR 1917 $13

#547 Dayton, Lebanon & Cincinnati RR 1907 $80

#548 Dayton, Toledo & Chicago RY 1919 $20

#549 Dayton-Xenia RY 1937 $108

#550 Dayton, Xenia & Belpre RR 1886 $125

#551 Decatur Navigation Co 1917 $12

#552 Deepwater RY 1906 $120

#553 Deering Southwestern RY 1927 $10

#554 DeKalb & Western RR 1930 $9

#556 Delaware & Hudson Co 1930 $10

#557 Delaware & Hudson RR 1947 $8

#558 Delaware Bay & Cape May RR 1881 $125

#559 Delaware Otsego RR undated $23

#560 Delaware River RR 1881 $48

#561 Delaware, Lackawanna & Western RR 1932 $4

#562 Delaware, Susquehanna & Schuylkill RR 1901 $162

#563 Denver & Rio Grande RR 1905 $95

#564 Denver & Rio Grande RR 1908 $98

#565 Denver & Rio Grande Western RR 1933 $20

#566 Denver & Rio Grande Western RR 1959 $17

#567 Denver & Salt Lake RR 1921 $60

#568 Denver, Laramie & Northwestern RR 1915 $135

#569 Denver, Northwestern & Pacific RY 1908 $169

#570 Denver Union Terminal RY 1936 $18

#571 DeQueen & Eastern RR 1907 $58

#572 Des Moines & Central Iowa RR 1944 25

#573 Des Moines & Fort Dodge RR 1878 $75

#574 Des Moines & Kansas City RY 1889 $15

#575 Des Moines & Northwestern RY 1889 $70

#576 Des Moines, Iowa Falls & Northern RY 1907 $68

#577 Des Moines Northern & Western RY 1893 $155

#578 Des Moines Valley RR 1871 $212

#579 Detroit & Cleveland Navigation Co 1916 $29

#580 Detroit & Lima Northern RY 1898 $036

#581 Detroit & Michigan RY 1940 $24

#582 Detroit & Milwaukee RR 1872 $140

#583 Detroit & Toledo Shore Line RR 1936 $58

#584 Detroit Southern RR 1905 $23

#585 Detroit United RY Lines 1915 $27

#586 Detroit, Bay City & Alpena RR 1890 $4

#587 Delta Valley & Southern RY 1956 $12

#588 Detroit, Bay City & Western RR 1922 $55

#589 Detroit, Eel River & Illinois RR 1875 $105

#590 Detroit, Grand Haven & Milwaukee RY 1882 $75

#591 Detroit, Hillsdale & Indiana RR $110

#592 Detroit, Hillsdale & South Western RR 1879 $100

#593 Detroit, Lansing & Lake Michigan RR 1875 $44

#594 Detroit, Lansing & Northern RR 1884 $90

#595 Detroit, Lansing & Northern RR 1888 $40

#596 Detroit, Mackinac & Marquette RR 1882 $75

#597 Detroit, Monroe & Toledo Short Line RY 1904 $51

#598 Detroit, Toledo & Ironton RR 1931 $28

#599 Dexter & Northern RR 1910 $28