The Walt Disney World R.R.

The Walt Disney World R.R. Postcard
01110200 dp 79909

This is the first postcard, numerically, in the 01110200 series of photo postcards.  They were not the first to be produced but the first to use real photos of the park as opposed to the pre-opening artist's rendering cards.
There are two versions of this card in my collection.  One uses black ink and the other blue.  I am not sure if there is any significance.

Both cards utilize the early Florida Flag logo.  There are also versions of this card without the flag.  Of those later cards in my collection, sans flag, their postmarks are all 1978 - 79.
This card is from the Main Street, U.S.A collection as noted by the pot-bellied stove icon on the back.