I don't know about the actual 45 records, but when KLIF went Country around 1980, Dick Siegel either bought or was given all the old Top 40 carts used at KLIF. I remember him telling me this years later that he still had them...
Funny story about old station records. One day many years after I had left KVIL, I was in "Collectors Records" on Garland Road in Garland back when they were open and flipping through some records and had a good laugh as I noticed 45's from the old KVIL 45 control room collection! Having played them so many times over the years I was there, they were unmistakeable, many with labels either I put on or the music director for many years, X-Rey.
I can still remember the labels for records. On the left side of the record label was a rectangular white press apply label with the "total time" of the song on it. If it was "cold ending" song, it would have one time such as 3:37. If it was a "fade ending" song, it would have two times, one on top of the other, such as:
3:32
-
3:38
The top time was when the song BEGINS to fade and the bottom time was when it is GONE. The point being you should not talk before the BEGIN fade time or the COLD out time. The times were very precise, not just taken from the record label. We would play it and watch the timer to make sure it was correct. Trust me if it wasn't, the task would be "requested" to be repeated....once.
On the right side of the record label was a round white press apply label, with a horizontal line through the middle of the sticker, with the intro time on the top part and the end indicator on the bottom. If the intro could have several times. In other words if it was a post, post, then vocal, we'd list all of them with the last one of course being the absolute point you could not talk past.
The end indicator was a solid black large dot for "hard cold" (think ending of "Bad Blood" by Neil Sedaka), a small dot in a circle for "soft cold" (think Neither One Of Us by Gladys Knight), a "fade" was indicated by a circle with a backslash inside similar to the international sign for "no"...
Interestingly, KVIL was much later going to "carted music" than most stations. We played actual 45's and LP's well into the 1980's and finally went cart somewhere around 1983... When I was Music Director 1989-1992, we re-carted every single song from TM Gold Discs. Then when I left, we were in the process of converting to the old TM Jukebox CD player automation, finally they did go to hard drive music.
The cart labels for songs used a similar format resembling the following:
QUEEN OF HEARTS 3:13 :13
1208 -
JUICE NEWTON 3:19
cart number would have been typed on a round sticker on the far left of the cart.
then on first line of label, title followed by begin fade time followed by intro time
bottom line was artist followed by end time followed by cold, soft cold, or fade handwritten symbol.
If it was a "dayparted song", there might be an orange sticker in the center part and on it saying something like "4pm-2am only!"
useless trivia...but hey...