I'm nowhere near LA (in fact I'm in the UK), but if you find no other help, I back up Twiggy media for free, provided it is in decent condition (i.e. the oxide layer isn't starting to degrade) and my Lisa feels like it (dependability is not a Twiggy strong suit). This offer extends to everyone, and I would be very pleased if knowledge of this would spread far and wide. Let's save those disks!
That said, you are likely to find help closer to home, I expect.