Claus Spreckels of CaliforniaCreated By: Cordray, William Woodrow Publisher: Dissertation, University of Southern California, 1955
Claus Spreckels. The Sugar King in HawaiiCreated By: Adler, Jacob Publisher: Honolulu: University of Hawaii Press, 1966
CURTiSS: Histories of CURTiSS Candy Company Farms and CURTiSS Breeding ServiceCreated By: Miles R. McCarry Publisher: Cary, Ill.: Curtiss History Committee, 1996
He Made His Own Luck: An Interview with a Rising Star in American BusinessCreated By: Arthur B. Heiberg Source/Publisher: Youth’s Companion July 1928, 337
Images of America: SpreckelsCreated By: Gary S. Breschini, Mona Dudgel, and Trudy Haversat Publisher: Charleston: Arcadia Publishing, 2006
Spreckels Sugar Company CollectionCreated By: UC Davis Special Collections Publisher: University of California at Davis Special Collections
Spreckels Sugar Company: The first Fifty YearsCreated By: Conway, Jimmie Don Publisher: Thesis, San Jose State University, 1999
Western Sugar Refinery Records, 1871-1949, Bancroft Library, University of California BerkeleyCreated By: Bancroft Library, University of California Berkeley Publisher: Bancroft Library, University of California, Berkeley
