Derr and Rainey, "Tracing Early Passenger Cars of the EBT," p. Hoffman, "Locomotives the EBT Didn't Buy;" "More Notes on Early EBT Passenger Cars." Johnson, "EBT M-1 for On3 from Hallmark," review, p. Kyper, "Mt. Union Train Wreck of 1917," p. McCoy, "FEBT Newsletter Index." Padgett, "Hallmark Models' HOn3 Orbisonia," review, p.
Abbreviations denote the following features: g (graph), m (map), p (photograph), and s (sketch or non-photographic illustration).