I think I found your modem eliquid:
Were you able to uprade from the rotary phone to a push-button model at least? I know it can be hard to find round speakers/receivers with dial-phones... Poor kid.
lol used to host a bbs with my friend with these
think we had a whole 4 people on it.
Odd that computer has the smaller disk with a rotary modem. I remember the invention of the hard drive. Programming with punch cards.
Crap... i'm old.