Pennsylvania Railroad class AA1 (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Pennsylvania Railroad class AA1" in English language version.

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2books.google.com

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archive.today

Britton, Jerry. "Electric Class Cross Reference". Keystone Crossings. Archived from the original on May 12, 2008. Retrieved 2008-05-03.

books.google.com

Burch 1911, p. 322 Burch, Edward Parris (1911). Electric Traction for Railway Trains. New York: McGraw-Hill. OCLC 854497122.
Burch 1911, p. 321 Burch, Edward Parris (1911). Electric Traction for Railway Trains. New York: McGraw-Hill. OCLC 854497122.

issuu.com

Staufer, Alvin F. (1962). Pennsy Power. Carrollton, Ohio: Standard Print & Pub. Co. p. 247.

pennsyrr.com

kc.pennsyrr.com

Britton, Jerry. "Electric Class Cross Reference". Keystone Crossings. Archived from the original on May 12, 2008. Retrieved 2008-05-03.

worldcat.org

search.worldcat.org

Burch 1911, p. 322 Burch, Edward Parris (1911). Electric Traction for Railway Trains. New York: McGraw-Hill. OCLC 854497122.
Burch 1911, p. 321 Burch, Edward Parris (1911). Electric Traction for Railway Trains. New York: McGraw-Hill. OCLC 854497122.