As for the Salton Sea clip, which has gone up today on the Atlantic's video channel:
1) It's interesting and visually arresting.
2) It is particularly interesting/alarming for me, because I could well have been in one of those shots from the Leave it to Beaver era. Several times in the late Fifties and early Sixties my dad would dragoon the rest of us for the broiling drive down through the desert to Salton City and neighboring developments, with the fantasy that it could be a "good investment" for the family to buy a lakeshore lot there. Thank goodness he never followed through. I will claim that the grade-school version of me is somewhere in shots from the video like the one below -- hey, that could be my sister eating watermelon -- and I defy anyone to disprove it.
Fortunately our Video Channel's Kasia Cieplak-Mayr von Baldegg pronounces this the "glamorous" era for the Salton Sea. (Other pics here.)
3) The announcer's voice in the old footage shows post-World War II remnants of the striking pre-war "announcer voice," whose rise and amazing near-instantaneous disappearance I mentioned a few weeks ago. I am remiss in not sharing some of the very, very abundant flow of responses about why a style of speaking that dominated American public discourse -- newsreels, plays and movies, some politicians -- is so rarely encountered now. Here come the hypotheses: