Popular Science Archives!

Popular Science magazine has recently opened up their archives for public searches. This service is free and it covers 137 years of their publications.

From their website:
"We've partnered with Google to offer our entire 137-year archive for free browsing. Each issue appears just as it did at its original time of publication, complete with period advertisements. It's an amazing resource that beautifully encapsulates our ongoing fascination with the future, and science and technology's incredible potential to improve our lives. We hope you enjoy it as much as we do."

Their full-color "magazine" style issues start at January 1920, and the ads featured are worth looking at.

As for right now it is searchable only by keywords, but in the future it will be much more in depth. Check it out when you get the chance!

Click the image to go directly to their archive.