"Bluegrass" as a musical genre had not really come into being during this period. Edison did issue recordings of 'old time' fiddle music (most notably John Baltzell), and the sort of folksy ballads popularized by Vernon Dalhart and Ernest Stoneman among others; but the 'country' genre was not prominently featured on the Diamond Discs. In fact, some titles may never have been issued on DD, but were issued on the late Blue Amberol cylinders.
I purchased some discs sight unseen(I know).When I received them there appears to be a discoloration,moldish gray on some of the records.I cleaned them properly with alcohol and soft tissue.When I play them they are highly staticky.Could someone please tell me if these records are ruined or fixable.Thanks.Pictures enclosed
It's hard to tell (given that the attached photos are so small) what their actual condition is; but if you have cleaned them thoroughly, and they still have major surface noise, they are probably beyond redemption.
There was a period (from mid-1916 through 1918 or so) that Edison discs suffered in quality: a shortage of phenol (a crucial ingredient), and lapses in quality control meant that many record pressings came out with less than acceptable sound quality.
Add to that the sub-standard conditions in which some of these discs were stored, and a susceptibility to mold damage, many DDs of this period may be unplayable. In fact, some collectors avoid the etched-label discs entirely, preferring to focus on the later paper labels.
However, there are some gems to be found on the earlier discs: the pre-1916 "transfer" DDs (if they have not suffered from splits), and even some wartime pressings, may be good buys. You just have to examine them carefully close up, to determine their condition.