Help!

Can anyone identify these O-Gauge model Trains?

The following are my best guesses at how these items should be identified. I will update with any information you provide. Thanks in advance for any help or pointers to people who might know!

Note that clicking on the image or highlighted text will download a .JPG image of about 75KBytes size.

• Pullman "Observation".
  It is possible that this is an American Flyer "405 R OBS." from a box lid which was included with the collection.
  • Manufacturer: unknown (American Flyer?).
  • Dates of production: unknown.
  • Current replacement value: unknown.
• Pullman "Boston".
  It is possible that this is an American Flyer "404 R PUL." from a box lid which was included with the collection.
  • Manufacturer: unknown (American Flyer?).
  • Dates of production: unknown.
  • Current replacement value: unknown.
• Pullman "Seattle".
  It is possible that this is an American Flyer "404 R PUL." from a box lid which was included with the collection.
  • Manufacturer: unknown (American Flyer?).
  • Dates of production: unknown.
  • Current replacement value: unknown.
• American Flyer box and lid flap.
  This appears to have been the box (and flap which came off but was saved for some reason over the years!) for the Observation car above. Note the top edge of the box is pushed up slightly. This is due to the thumbscrews from the tops of the cars which did not fit without forcing. In fact, all the cars are about 5mm too wide for the boxes and about 10mm too tall.
  • Manufacturer: American Flyer/A. C. GILBERT CO.
  • Dates of production: unknown.
  • Current replacement value: unknown.
• 554 Locomotive Box?.
  This is what is left of the stamp on the end of a heavy-duty corregated cardboard box which might have held the locomotive for this set. It appears to say "# 544 R LOCOMOTIVE". I have no idea if the original engine is still in existance, and am looking for any pointers to a photograph or drawing of an engine that would have come in this box, or belonged with the rest of the set. From the lettering, I will guess that this is an American Flyer also.
  • Manufacturer: unknown (American Flyer?).
  • Dates of production: unknown.
  • Current replacement value: unknown.
• Royal Blue "556" Locomotive.
  This is included here for comparison (I'll snap pictures of the rest of the "Royal Blue" set later). I don't know what sequence Gilbert selected for their engines, but if they were any way near sequential, this unit was produced after the 554 unit (box only) above.
  • Manufacturer: American Flyer.
  • Dates of production: unknown.
  • Current replacement value: unknown.