This site, 1970sFlashback.com, is part of a group of sites that provide information from a particular decade, even breaking it down by specific years in the decade.  There are categories that include:

• Economy/Prices
• Movies
• TV
• Sports
• News
• Books

The related sites include:

• 1960sFlashback.com
• 1980sFlashback.com
• 1990sFlashback.com

Fun and informative, I particularly like and use the economic data like the average cost of a house in 1972 ($30,500) or the cost of a gallon of milk in 1967 ($1.03).