DP and DF series manuals
These manuals are operating manuals for Diesel Passenger and Diesel Freight locomotives. They are normally found in black multi-ring mechanical (snap) binders with heavy covers, but occasionally there are others. See photo.
In photo above, top left is oldest style with cover customizable for railroad. Top right is general cover for DP and DF manuals. Bottom left is BLH (later date) but be aware that covers and whole manuals were reissued so that a model built before the BLH merger may be found inside one of these binders. Bottom right is normal size for switcher and road switcher manuals but contains a condensed operating manual for road locomotives.
KNOWN MANUALS:
DP-100 Wharton & Northern 2000-2002 DR-6-4-1000/2
DP-101
DP-102
DP-103 PRR 5823-5834 DR-12-8-1500/2
DP-104 Seaboard Air Line 4501-4513 DR-12-8-1500/2
DP-105
DP-106 Seaboard Air Line 2700-2702 DR-6-4-1500/1
DP-107 Diesel-Electric 1500 HP Road Locomotive DR-6-4-1500/1 (Condensed)
DP-108 PRR 5770A-5787A, 5770B-5786B DR-6-4-1000/2
DF-100 Seaboard Air Line 4500 DR-12-8-1500/2
DF-101 CNJ DR-4-4-1500/1
DF-102 NYC 3400-3403, 3701-3702 DR-4-4-1500/1
DF-103 Missouri Pacific DR-4-4-1500/1
DF-104 PRR 9568-9593 A & B DR-4-4-1500/1
DF-105 PRR 9700-9707 A & B DR-4-4-1500/1 (1625 BHP )
DF-106 DR-4-4-1600/1 Oct 1950 Made w rev pages to DF-105
DF-107A PRR RF-16
DF-107B RF-16 (Condensed)
DF-108 RF-16
DISCUSSION:
Earliest range of manuals in the DP and DF series are all custom for each railroad.
DP-107 (which is the bottom right manual in the photo) is a "condensed" operating manual. The normal Baldwin DP and DF series manuals are extensive, with many system drawings and explanations. Condensed manuals are very simple and contain only operating information and illustrations as well as troubleshooting. DP-107 shows the New York Central's units painted but not lettered, and is not labeled anywhere as specific to NYC.
DF series manuals are straightforward until we reach DF-105. These are the units that Staufer and other contemporary railfans mislabeled as "RF-15" units, a totally incorrect label. These units, while factory rated 1500 HP per unit were the first road locomotives to receive the uprated 1625 BHP engine, allowing a true 1500 HP for traction.
DF-106 is an odd creation, made by using a set of green insert / rev pages at front and numerous rev pages throughout an otherwise normal DF-105 manual. The units are described as DR-4-4-1600/1; DF-106 rev pages are dated October 1950 while the DF-105 introduction page (still in the manual, confusingly) is dated May 1950. This is almost certainly the operating manual for B&O's RF-16's.
DF-107A is a custom RF-16 manual for the PRR with added pages on electrical specialties such as motor-generator set, standby heaters, cab signals, train control and more. Published September 1951.
DF-107B is a condensed manual for the RF-16 and includes pages on add-ons that the PRR used, but the manual is nowhere labeled as PRR specific. Uses paper fasteners to hold binder, pages together instead of a mechanical clamp multi-ring binding. Very brief but adequate for operation and troubleshooting.
DF-108 is a very late (February 1953) reissue and revision to the RF-16 operating manual and is not railroad specific.