Train Shed Cyclopedia Nr. 27

Hey… a looooooong time ago I picked up a copy of Train Shed Cyclopedia Nr. 27 (SIGNALS) at the Illinois Railway Museum. And a loooooong time ago, I lost it. Can’t find a copy anywhere. Does anyone know where I can obtain a copy? Anyone have one they’re willing to give up?

Hey… a looooooong time ago I picked up a copy of Train Shed Cyclopedia Nr. 27 (SIGNALS) at the Illinois Railway Museum. And a loooooong time ago, I lost it. Can’t find a copy anywhere. Does anyone know where I can obtain a copy? Anyone have one they’re willing to give up?