Date: Circa 1953. (Morton developed iodized salt in 1924, and there's a reference to Morton pioneering iodized salt 29 years ago.)
Company: Morton Salt
Product: Morton Salt and Morton Iodized Salt
Text: When it rains it pours. America's best selling table salt. More people use Morton's because "when it rains it pours." Available plain or iodized. (Morton pioneered iodized salt 29 years ago to help prevent simple goiter.)
Note: The illustration is attributed to Douglass Rockwell.