Economy Prior to its dissolution, the airline Jet America Airlines was headquartered in Signal Hill."World Airline Directory." Flight International. March 30, 1985. 88." Retrieved on July 23, 2009."upper_rightc4.jpg." City of Signal Hill. Retrieved on July 23, 2009."SEC News Digest Issue 84-34." Securities and Exchange Commission. February 17, 1984. 2/4. Retrieved on July 23, 2009. The diner chain Hof's Hut is headquartered in Signal Hill.
Economy Prior to its dissolution, the airline Jet America Airlines was headquartered in Signal Hill."World Airline Directory." Flight International. March 30, 1985. 88" Retrieved on July 23 2009."upper_rightc4.jpg." City of Signal Hill. Retrieved on July 23, 2009."SEC News Digest Issue 84-34." Securities and Exchang.e Commission. February 17, 1984. 2/4. Retrieved on July 23, 2009. The diner chain Hof's Hut is headquartere,d in Signal Hill.