Info on Immeasurable Equation requested

Saturnians,

 I apologize if this topic has been discused

at length previously. I am a newcomer to this list. Feel free to refer me to the appropriate archive.

 In the EVIDENCE Sun Ra reissues, there is

brief advertisement of "The Immeasureable Equation" by Sun Ra. The address is given as Saturn Research, PO 7124, Chicago, Il. 60607.

 Can someone please offer a brief description

and price and whether the above address is still valid.

Thanks in advance,

John Jennings Jennings@physics.ucla.edu