The Bobster really found a gem this time: an article about Shea Stadium from a 1964 edition of Popular Science Magazine. What a marvel this "convertible" stadium was to the modern world of 1964. Escalators actually carry fans to their seats "all of which are wider than average and have unobstructed views." Are you sure that's not Citi Field you're talking about? Nope, that's our Shea. Sounds like a keeper.
If you can't read the image below, just click on it and it will appear in a full-sized window that you can scroll through using the arrows on your keyboard. This is page one. I'll post pages 2 and 3 later in the week.