Review Karl Zimmerman (2019)
Review of "The National Limited". Railroad History. (/isis/citation/CBB233864394/) unapi

Book Peter Tip; Karl Zimmerman (2019)
Dining a la Pullman: The History of Pullman dining Service. (/isis/citation/CBB538526681/) unapi

Review Karl R. Zimmerman (Fall-Winter 2018)
Review of "Route of the Chiefs: The Santa Fe in the Streamlined Era". Railroad History. (/isis/citation/CBB190534216/) unapi

Review Karl R. Zimmerman (Fall-Winter 2018)
Review of "Beebe & Clegg: Their Enduring Photographic Legacy". Railroad History. (/isis/citation/CBB968262497/) unapi

Review Karl R. Zimmerman (Fall-Winter 2018)
Review of "Trains: Photography of A. Aubrey Bodine". Railroad History. (/isis/citation/CBB245202397/) unapi

Review Karl R. Zimmerman (Fall/Winter 2015)
Review of "Chicago & North Western: The 400 Club, A History of the Presidential F Units". Railroad History. (/isis/citation/CBB321708182/) unapi

Review Karl Zimmerman (Spring/Summer 2013)
Review of "For Pullman eyes only: What rare internal files reveal". Railroad History. (/isis/citation/CBB378446071/) unapi

Review Zimmerman, Karl (Spring/Summer 2012)
Review of "The cars of Pullman". Railroad History. (/isis/citation/CBB063090601/) unapi

Book Karl Zimmerman (2010)
Little trains to faraway places. (/isis/citation/CBB767216149/) unapi