The blueprint copy was in the collection of Leonard Miekiszak and was donated to the Burlington Route Historical Society.
The drawing was scanned at 300 dpi into 14 TIF files which are (3510 x 2400) pels or (11.7" x 8"). This drawing is more detailed than the drawing shown in Corbin and Kerka's "Steam Locomotives of the Burlington Route" on p 228. 40256 shows the Burlington's upgrades to the locomotive after delivery from Baldwin including power reverse and cross-compound air pump.
Vernon Beck 14 Feb 2001, 30 June 2001
| Xsection1 | Xsection2 | Xsection3 | Xsection4 | Xsection5U |
| Side - Upper Front | Side - Upper | Side - Upper | Side - Upper | Xsection5L |
| Side - Lower Front | Side - Lower | Side - Lower | Side - Lower |