[silence] Cartridge Music question

[Matt Rogalsky]

Hello all,

A question about Cartridge Music "original instruments": can anyone 
provide a list of the types (specific manufacturers and model numbers) 
of phonograph cartridges used for the piece in its early days (circa 
1960-61)?

I found on ebay a couple of Astatic cartridges (models 12 and 12U) 
which have the slot and set-screw to insert a stylus (or object) and 
are similar to ones I remember David Tudor had in his collection, but I 
wondered if there were other models I could look for as well.

Thanks for any assistance,
Matt R