Oh geez I had one of those when I was a kid. I recognize the accelerometer. Unfortunately I misplaced my foxmitter just before a move in the mid-1990s. I hacked it with a larger output transistor so it put out 300 milliwatts. I had the accelerometer kit, the photocell kit and the tracking transmitter kit. Never got to fly them before I lost interest. I also built a mini mitter, which was a cut down transmitter. I remember both of the items worked just before the move. The 22.5 volt Burgess Battery was fresh and the transmitter still put out RF. Gosh, those were the days.
I think that second kit is the photocell kit. One could use it as an indicator as to how much the rocket was spinning on the way up or could stick a mouse inside of a payload Bay have a flashlight shining off the mouse's belly so the thing supposedly took the mouse's pulse. That was before they made it illegal for launching up mammals. Kurt