By Association of American Railroads. no.2500 (1988:June 22). Copy 2. Item is in English.

By Association of American Railroads. no.2501 (1988:July 6). Item is in English.

By Association of American Railroads. no.2501 (1988:July 6). Copy 2. Item is in English.

By Association of American Railroads. no.2502 (1988:July 20). Item is in English.

By Association of American Railroads. no.2502 (1988:July 20). Copy 2. Item is in English.

By Association of American Railroads. no.2503 (1988:August 3). Item is in English.

By Association of American Railroads. no.2503 (1988:August 3). Copy 2. Item is in English.

By Association of American Railroads. no.2504 (1988:August 17). Item is in English.

By Association of American Railroads. no.2504 (1988:August 17). Copy 2. Item is in English.

By Association of American Railroads. no.2505 (1988:August 31). Item is in English.