Ok, here's the deal. A few of us in the #gbdev IRC channel want to dump the ROM of the Gameboy test cartridge, since this hasn't been done. There are to ways this could be done. We know a person who owns this cartridge, and would need a dumper of some kind to dump this ROM. The person we're in contact would like to keep this dumper in exchange for the service. If you have a spare bleepbloop/smartboy flasher that you're willing to donate in the name of software preservation, please contact me.
Alternatively, if you own a copy of this cartridge and you're willing to dump it, please also contact me.