Looking for sample set "ifslots"

Looking for the complete sample-set "ifslots", used for all the games in interflip8035.cpp

List of samples: ringbellm, coin_in, rattle_forth, fade_ring, rattle_back

List of games: cbrava & clones, sevilla & clones, toledo & clones, jackuse.

These samples are not in the download/extras/mame section.

Can anyone help?

Thank you