Ad*Access. Indexes and displays over 7,000 digitized print advertisements originally published between 1911 and 1955.

Emergence of Advertising in America, 1850-1920. About 9,000 images of ads during this time period.

Paperboynews.com. Vintage ads covering many products.

In addition, look at some of our old magazines such as "Life", "The New Yorker", "Time" and "Newsweek" for ads,  if you have an idea of the time period.