The Denver Post has a fantastic collection of black & white photos from the 40’s, 50’s and 60’s at the following link:

http://photos.denverpost.com/photoprojects/galleries/newsgalleryV6.html#id=album-2873&num=1

Some of the photos (like the air conditioned riding lawn mower) truly depict the “space age” mentality of the mid-century era.  Have a look and enjoy!