Lemonade

Probably one of the most summeriest beverages: LEMONADE!

Minute Maid

June 20, 1955 Life Magazine

July 11, 1955 Life Magazine

Did you ever have a lemonade stand?  Mine would have been a card table not a fancy one like this! Minute Maid offer Lemonade Stand Kit for only 35¢:

June 18, 1956 Life Magazine


Sunkist (Spam and Cheez-Whiz!)

June 20, 1955 Life Magazine

July 4, 1955 Life Magazine
Sunkist

August 8, 1955 Life Magazine

July 23, 1956 Life Magazine

Frozen Lemonade from Sunny California

July 25, 1955 Life Magazine

July 9, 1956 Life Magazine

Lemon Sherbet or Ice Cream also sound like a refreshing lemony treat:
Sealtest

July 8, 1957 Life Magazine
Lady Borden

July 15, 1957 Life Magazine