When researching a Baldwin locomotive, you need to
look at the class number and drawing number, not the common builder’s
number found on the builder’s plate attached to the smoke box. Baldwin Class numbers look like 8-18c-17. (8
total wheels, 18 is a reference to Cylinder size, C is 4 driving wheels
(assuming all non driving wheels are a lead truck, and 17 is the 17th
locomotive built to that class)
For each locomotive or group of identical locomotives
there is a specification sheet, which can be found on line at the DeGolyer
Library at SMU (The DeGolyer library
will soon become your new best friend)
Start at Pacificng.com’s Baldwin page http://www.pacificng.com/template.php?page=/ref/locobuilders/blw/index.htm Which has a description of the Class number
system and links to various pages at the DeGolyer, especially the specification
sheet page https://digitalcollections.smu.edu/digital/collection/rwy/id/32
Find your locomotive’s specification sheet The specification sheet will provide lots of
information including how the locomotive was painted, about cab style,
injectors, dome size… and find the drawing
number on the right side of the header of the specification sheet.
Drawing numbers are unique to each class organized by
class… So a 8-18c drawing 1, is not the
same as a 10-22d drawing 1, but in some cases a 8-16c might be built to a 8-14c
The class lists also have the drawing number, but those
lists are not on line (but have been microfilmed) The class list microfilm also includes a list
of basic measurements by plan.
DeGolyer, the California State Railroad Museum, and the
Smithsonian all have some Baldwin drawings.
We have a few up at Pacificng.
I have copies of all the paint information and take requests... I have the drawing index but it's on microfilm and libraries are still closed here.