Mono vs Stereo LP's

Thanks to both of you for the info. As it happens, I do use Audio Intelligent Vinyl Solutions which I would agree is an excellent cleaner ... the best I have ever tried. I cleaned this record before playing and then again after noticing the noise with no significant difference which suggests it is not dirt. The record was also cleaned on a record machine by the dealer who sold it to me and appears in very good condition with good luster and no scratches.

I tried a little experiment this evening based on suggestions here and the Asylum. I got two Y connectors at Radio Shack with reversed male and female RCA connectors and used them to blend down the stereo outputs to mono and then in to the phono pre ins. This produced a clear 50+% reduction in the noise. I had read that the noise is out of phase between the channels and some will cancel out. The level is now quite low and easily makes the record quite enjoyable. I think, however, that a good mono cartridge may be in my future.
BTW 4yanx, the record is the plrp 8203 purple label (also identified as New Jazz. This is listed as 1958 issue, the same year as the more coveted (but more expensive) Yellow Label. Goldmine shows a number of NJLP 8203 for these but my record has prlp 8203 on the label. The Prestige 24032 was supposedly released in the 70's.

Glad for you if you have that recording 4yanks! According to Allmusic Jazz, Farmers Market was a compilation of sessions that Art made in the mid 50's which explains the date ambiguity. Love that Art Farmer!! I also recently picked up a 10" original issue of prlp 209 "Art Farmer Quintet" with Gigi Gryce from 1955. Interestingly this mono recording is quite quiet (except for a little scratch on side 2) with my stereo cart and benefits only slightly from the mono mixing described

1000 melted classic jazz albums! That was a sad day indeed!