Northrup King & Co

• 1903 sterling seeds
• 1916 annual catalogue [of] sterling seeds
• 1933 retail price list
• 24th annual catalogue of sterling seeds
• 27th annual offering of sterling seeds
• 28th annual offering of sterling seeds
• 29th annual catalogue
• 30th annual catalogue
• Alfalfa, an outstanding crop for pasture, hay and soil improvement
• Annual catalogue
• Annual garden guide for 1930
• Annual seed catalogue