By Association of American Railroads. no.2495 (1988:April 13). Item is in English.

By Association of American Railroads. no.2496 (1988:April 27). Item is in English.

By Association of American Railroads. no.2496 (1988:April 27). Copy 2. Item is in English.

By Association of American Railroads. no.2497 (1988:May 11). Item is in English.

By Association of American Railroads. no.2497 (1988:May 11). Copy 2. Item is in English.

By Association of American Railroads. no.2498 (1988:May 25). Item is in English.

By Association of American Railroads. no.2498 (1988:May 25). Copy 2. Item is in English.

By Association of American Railroads. no.2499 (1988:June 8). Item is in English.

By Association of American Railroads. no.2499 (1988:June 8). Copy 2. Item is in English.

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