UNITED Page 5

1947	1947	1947	Apr 1988
		May 1990		Jun 1987
Jun 1991	Jun 1991	Jul 1988		Dec 1980
Dec 1984	Sep 1977			Sep 1981
	Jun 1987	Mar 1990	Jun 1987	Jun 1988
Jun 1988	Feb 1993	Jun 1988	Mar 1980
Sep 1974	May 1981	Oct 1983	Jun 1988	Jul 1974
Aug 1977	Sep 1977	Oct 1981		Jun 1983
July 1974	June 1987	Nov 1989	Aug 1977
Feb 1976		Late 1950's	Mid 1980's	Last Day of Operations February 27, 1995