The Fender Stratocaster (Strat) was designed by Leo Fender in the mid 50's. It has been used in all genre's of music and copied by many knock off companies. Glen's tenure with a strat has been limited, but it is evident that he liked that design and feel in an electric guitar in his later years.
Here is an early picture of Glen using a strat around 1964.
It is interesting to note that Forrest White documented in his book, "Fender, The Inside Story", that around the summer of 1963 Glen expressed, to him, an interest in being a "demonstrator" of Fender guitars. Forrest was impressed with Glen's playing and credentials, but Don Randall shot it down saying "No, do not. These guys around a dime a dozen," Forrest summed up the mistake by stating "I think that since Glen has earned a lot of money, demonstrating the capabilities of the equipment of our competitors"
In the late 80's/ early 90's, Glen returned to performing with a Strat. Jeff Dayton
shares that "Glen loved my '84 Vintage '57 (reissue) Strat, with EMGs, I had when I met him. You will see that Strat in a few early videos, I was part of, starting in 1987. Glen wanted one and we couldn't find another 57 reissue, so he ordered one from Westwood Music. They built him a blonde Mary Kay finish rosewood board hard tail, which ended up later as my white baritone I used on Galveston, Wichita Lineman and House of Love. Don't know where it is now."
Jeff added "Steve Warner, in about 1991, gave Glen a white bodied, with a maple neck American Standard Strat. "He used it a lot and loved it, but he gave it to me for a while, maybe a year, then asked for it back." I am not sure if Jeff meant that Glen asked for it back, or Steve. Jeff went on to say that "From the white 91 on, he never went back to rosewood fingerboards that I know of."
The beautiful blue burst Strat you see Glen with, in the early 90's, is described as a Strat Plus Deluxe that had some modifications, noticeably a double humbucker in the bridge position, a roller nut and a maple fret board.
Sometime, after the turn of the century, Glen went to a G&L customized Comanche. It certainly is a Strat knockoff, but was (re)designed by Leo Fender. Glen obviously preferred it to the Strat, as he finished out his career with it.
Glens fondness for his blue Stratocaster is shown in the "stairs" picture. He has it on the bottom row, his far left. Additionally, there is a red one further up the staircase.