Philip Morris ad, 1956 (available at Print Ads Through the Decades).
Advertisement in Redbook, 1950 (available at Duke University Libraries' Ad*Access).
Ivory Snow, 1951 (available at "Ivory Snow - Overposed")
Jello ad, in Life Magazine, June 30, 1952 (available from Wishbook, at Flickr).
Trix advertisement, in Parents Magazine, August 1957 (available from Wishbook, at Flickr).
Lux ad, April 1957 (available at vintage.ads.livejournal.com)
Dow Chemicals ad, 1952 (available from x-ray delta one at Flickr).