Stanley 
Combination Planes
Stanley #45
Instruction Manual
 Type Study
Blood & Gore
 Original Patent
Hollow & Round Accessories
Coming Soon!
Photo Gallery
Boxes
The 306kb PDF manual is 11 pages long.  It includes information on using the plane, standard and special cutters, an exploded parts list and accessories.
 
Stanley #46
Instruction Sheet
  Type Study
Blood & Gore
 Original Patent
Photo Gallery
Boxes
The 49kb PDF instruction sheet has a few tips & shows the cutters, but not much else.
Stanley #47
Instruction Manual
Type Study...
 See the #46 type study
Blood & Gore
 Original Patent
Photo Gallery
Boxes
The #47 is very similar to the #46.  It is more of a collectible plane. 
Stanley #50
 Instruction Manual
 Type Study
Blood & Gore
Photo Gallery
Boxes
The 162 kb PDF manual is 8 pages long.  It includes information on using the plane, cutters and an exploded parts list.  Thanks to Paul Coppinger for providing this manual.
Stanley #55
Instruction Manual
Type Study
Blood & Gore
 Original Patent
Photo Gallery
Boxes
The 22 page manual includes information on using the plane, standard and special cutters and an exploded parts list. It is an 802kb PDF.
Photo Gallery of Other Combination Planes
Dorn's Patent Plane 
Coming Soon!