The Petra Zone

in 1996 I was going to college in Plainview TX. I saw Petra and Degarmo & Key on back to back nights. first in Lubbock and next in Amarillo. the list shows a Lubbock, TX concert on Nov 19, 1986 with a day off before the next show in Albuquerque, NM on the 21st. I cannot find my box of ticket stubs b...