These first three slides are dated March 1973. They appear to be taken in the general area of where Splash Mountain exists today. I'm assuming that means that those totem poles no longer exist...at least I don't remember seeing them on the trips I've made to the Magic Kingdom in recent years. In the background, we can see a drained Rivers of America and the construction of Tom Sawyer Island taking place. I did some research and found out that T.S. Island did not open to the public until May of 1973. Major Pepperidge over at Gorillas Don't Blog posted a 1973 Keel Boat picture last month, that also showed some Tom Sawyer Island construction off in the distance.
There appears to be a green contraption in the river bed on the far right. Could this be a pump to keep the Florida rain waters out during construction? There is also a bulldozer on the far left side of the picture. The lady wearing the smart pantsuit and holding the groovy purse seems to be having fun....she reminds me of my grandmother!
This next pic shows The Hall of Presidents building on the far side of the river. Also, just to the right of the shorter totem pole, a portion of Harpers Mill and it's water wheel can be seen.