I'm looking for some drawings that are missing from the Penn State Archives for the BLH TE-1 Sales Order 49001. They are:

Erecting- Elect, 43-6-1, 4500HP Steam Turbine BLW 115660-0, 09/14/53

Frames, 46-7-4550, Frame & Truss, 10/14/52

Frame Details, 47-7-2080, Front Span Bolster & Details, 10/09/52

Frame Details, 47-7-2090, Rear Span Bolster & Details, 10/09/52

Any assistance would be appreciated.