We just received a large collection of railroad locks and keys.  http://stephansrailroadhistory.com/locks.aspx has all the photos in a slide show format by my number.  Includes are locks from Adlake, Fraim, Champion, Yale and other manufacturers.  Many are from the Louisville and Nashville Railroad.     L&N C&O  B&O CRR  Southern SCL and other railroads are represented. 

Lock ??  CRR?  GRR? Keline L028
Key ACL #28838 Adlake stamped in reverse K001
Key ACL RR Adlake 49966 K006
Lock AD&S Co Fraim Lancaster L090
Lock Am Exp Co  L072
Lock Atlantic Coast Line RR Co  Sterling L073
Lock B&O   Yale  L019
Lock B&O  Adlake L091
Lock B&O Signal Dept  Yale L080
Key BN Inc K003
Lock C&O  Adlake L063
Lock C&O Signal Dept Yale L076
Key C&O? Ry K002
Key CRR Adlake K005
Key Frisco  Adlake K018
Lock GM&N Miller Lock Co L039
Lock GM&O  S Lanc PA #046? L094
Lock GSCO L054
Key IC RR A 3611 S K051
Key ICG K019
Key ICG RM Co K060
Lock ICG RR Adlake K4 L041
Lock ICG RR Hansl? Mfg Co L034
Lock L&N       1 1968 L007
Lock L&N      7  1902 L012
Lock L&N    3 1966    L006
Lock L&N    7  1967   L018
Lock L&N   5 1958 L027
Lock L&N   Adlake  77 P L025
Lock L&N  1960 L089
Lock L&N  1966 L064
Lock L&N  1967 L079
Lock L&N  Adlake K110
Lock L&N  Adlake K12 L026
Lock L&N  Eagle six lever L043
Key L&N  MI K035
Key L&N  MI K053
Lock L&N 1957  S Lanc PA 7 L033
Key L&N Adlake K037
Key L&N Adlake    K031
Lock L&N Adlake  K6 L067
Lock L&N Adlake  K6 L083
Lock L&N Adlake 13 L002
Lock L&N Adlkae L066
Key L&N MI K040
Lock L&N Raco L061
Lock L&N RR      S     1966 L023
Lock L&N RR     47  L020
Lock L&N RR    S   3 1957  L008
Lock L&N RR    S   8 1967 L009
Lock L&N RR   1968 L029
Lock L&N RR   A L059
Lock L&N RR   Yale    L011
Lock L&N RR  104 L030
Lock L&N RR  1961 L003
Lock L&N RR  Adlake L081
Lock L&N RR  Adlake  L068
Lock L&N RR  Adlake K14 L065
Lock L&N RR  Adlake K-7 L070
Key L&N RR  D 20106 K032
Key L&N RR  MI K054
Lock L&N RR  Raco K101
Key L&N RR  SBD MI K029
Key L&N RR  Slaymeker 1004 K050
Key L&N RR A189 Master K074
Key L&N RR A602 Master K068
Key L&N RR A605 Master K072
Lock L&N RR Adlake K107
Lock L&N RR Adlake K108
Lock L&N RR Adlake K109
Lock L&N RR Adlake L037
Lock L&N RR Adlake L084
Lock L&N RR Adlake     L005
Lock L&N RR Adlake     L010
Lock L&N RR Adlake     L013
Lock L&N RR Adlake     L014
Lock L&N RR Adlake     L021
Lock L&N RR Adlake     L022
Lock L&N RR Adlake    S L004
Lock L&N RR Adlake  K12 L069
Lock L&N RR Co Yale L046
Key L&N RR CSX  MI K034
Key L&N RR D 29429 K041
Lock L&N RR K2 Adlake L035
Key L&N RR MI K055
Lock L&N RR Safe L097
Key L&N RR SBD  MI K033
Key L&N RR SBD  MI K039
Lock L&N RR Sig Dept L045
Key L&N SBD  MI K042
Key LI K036
Key LN K038
Key M&O RR  S 4532 K020
Lock MCC L044
Lock Monon  Adlake L032
Lock Monon Signal Dept L098
Lock MoPac  Genreal Fraim L050
Lock MP Co L062
Key MWC K070
Lock NC&StL  S Lanc PA 1956 Z L038
Key NC&StL 6177 Slyameker K057
Key PC RR Adlake K016
Key PR Master  K065
Key S Ry - ES  S K052
Lock SAL RR  Z L036
Key SAL RR 13577 Slyamker K058
Lock SAL Ry Co  ET Fraim Lock Co L047
Lock SCL RR Adlake L040
Lock SCL RR Adlake 79 L092
Lock SCL RR Adlake 79 L093
Lock SCL RR WB 620 L031
Lock SCL Signal   E K105
Lock SCL Signal   E L087
Lock SCL Signal   E L088
Lock Seaboard  1957 L042
Key Seaboard #16675 K062
Key Seaboard Systems RR keychain with SW104 key K075
Lock So Ry Yale L049
Key Unmarked K004
Key Unmarked K024
Key Unmarked K026
Key Unmarked K059
Key Unmarked K064
Lock Unmarked L074
Key Unmarked  K009
Key Unmarked  K011
Key Unmarked  K014
Key Unmarked  K049
Lock Unmarked    WB L086
Key Unmarked   #28246? K056
Lock Unmarked   Adlake     L015
Lock Unmarked   Corbin  with key K104
Lock Unmarked   WB L085
Lock Unmarked   Yale   L016
Lock Unmarked   Yale 927 L082
Key Unmarked  167 K043
Lock Unmarked  A L057
Lock Unmarked  Adlake L075
Key Unmarked  American lock Co E507 Do Not Duplicate K045
Lock Unmarked  Champion six lever L056
Key Unmarked  CR 1179 101 K047
Lock Unmarked  DE   Z L017
Lock Unmarked  Hanel Mfg Co L071
Lock Unmarked  Lou Ky L024
Key Unmarked  Mastre 1 K030
Lock Unmarked  Pat apl'd fo L058
Lock Unmarked  Yale L052
Key Unmarked #653 K066
Key Unmarked #791 K008
Key Unmarked 104  0108 K022
Key Unmarked 55 K012
Key Unmarked 79 K013
Lock Unmarked Adlake L001
Key Unmarked American Lock Co E507 do not duplicate K071
Key Unmarked American Lock Co E507 Do not duplicate K073
Key Unmarked Atco K028
Lock Unmarked Champion Six Lever L100
Key Unmarked D 780 K048
Key Unmarked F054? K061
Key Unmarked F054? K063
Key Unmarked Franklin K015
Key Unmarked FV4 K010
Key Unmarked John Link Tulsa Ok K007
Key Unmarked Miller K017
Key Unmarked P… K025
Key Unmarked P074 K044
Key Unmarked P58    K069
Key Unmarked P58MWC K067
Lock Unmarked Raco K102
Lock Unmarked Sargent & Greenleaf K103
Key Unmarked SBD  0575 Registered Do not duplicate K046
Lock Unmarked signal lock? L053
Key Unmarked Taiwan K023
Key Unmarked W Buhannan Brooklyn NY K027
Lock Unmarked Yale    K106
Lock Unmarked Yale Mfg Co  #13 L095
Lock Unmraked WB L078
Key UP 5045 K021
Lock US Army L077
Lock USN Old English Four brass levers Genuine Solid Brass 1 Federal Jas Morgan & sons L048
Lock VGF American Lock Co Series M10 L055
Lock Western Union Tel Co EF Fraim Lock Co Lancaster PA L096
Lock WRRS CO  #0147-6 L051
Lock WRRS Co #0147-6 L099
Lock WRRS Co $0147-6 L060

 

ACL Padlock Railroad Lock Adlake with key

 AWG Lock

 

  AWP Lock

 

B&O Padlock Railroad Lock with Key

 

C&O Lock No Key

 

ICG Lock with Key

 

A&WP Lock with L&N Key

 

  SAL Lock with key

 

So Lock with key