I know that it's all very old hat now but it might be worth considering aspects of the list that Dick Greenhaus gives above.
He lists albums that CAMSCO has re-released (under license) and presumably he means licensed from Peter Kennedy and Folktrax. The list includes:-

Yankee John Galusha
Lena Bourne Fish
The Hicks Family & Friends
Tink "Tillet

Hmm, working on the Jeff Warner show mentioned in my previous posting, these names seem very familiar as singers included in the show.
Let's have a look at the Folktrax catalogue which is still on the web at http://folktrax-archive.org/index.htm and see what it says about these albums:-

GALUSHA, "Yankee" John - N.Y., USA\ Unaccomp singer\ 1940-1 - (1859-1950) Lumberjack & game-warden - was born at Thurman, Warren County, N.Y. His father, a farmer, fought in the War of 1812 and died in 1892. John became a lumberjack at the age of 16 and later as a fire-warden, game and fishing guide and forest-ranger. In this later capacity, he met the President and also the State Governor, He and his wife, Lizzie, lived at Minerva for over 60 years until she died in 1949, a year before John's death at the age of 91 -- rec by Frank & Anne Warner: Warren Co FTX-921 - APPLESEED APR-CD-1035 2000: "Days of Forty Nine"/ "Springfield Mountain"/ "Lass of Glenshee"/ "Irish 69th"/ "The Cumberland & the Merrimac"

FISH, Lena Bourne - Vt., USA & NH, USA\ Unaccomp singer\ 1940-1- Her father was a lumberman in Vermont (1873-1945). Mrs. Fish was born and brought up in Black Brook, N.Y., daughter of Stratton Bourne and Cynthia Abel Bourne. Her father was a native of Vermont, a lumber salesman in the Adirondacks, supplying wood for the charcoal used in the ironstone mines. Since she did not like teaching, she became a housekeeper to a lady in Temple, New Hampshire, and eventually married her son, John Fish, who died in 1918. Then she moved with her 7 children to East Jaffrey, New Hampshire. and it was there that she recorded her large collection for the Warners in 1940, amounting to nearly a hundred songs. She hads already recorded for Helen Hartness Flanders, who taped half her collection and included 13 of her ballads in her book, "Ancient Ballads Traditionally Sung In New England". #12, 13 and 33, taken from the Warner's collection, were published in Alan Lomax's Folk Songs Of North America - It was her particular version of Whisky In The Jar (#13) that became popular and is still the version most often sung by contemporary performers in the UK -- rec by Frank & Anne Warner, East Jaffray, New Hampshire 1941: FTX-922 - APPLESEED APR-CD-1035 2000: "Gilgarrah Mountain"/ "Jolly Roving Tar"/ "Castle by the sea"

HICKS, Linzy & Winser - N C, USA\ singer/ dulcimer\ 1951 -- rec by Frank & Anne Warner, Beech Mountain: 927 - APPLESEED APR-CD-1035 2000: "A Poor Wayfaring Pilgrim"/ "Palms of Victory"

HICKS, Nathan - NC, USA\ dulc\ 1940 - Dulcimer-maker & player, nephew of Roby, who was Frank and Anne Warner's first contact Beech Mountain, NC in 1940 -- (dulcimer) with Frank PROFFITT (gtr) rec by Frank & Anne Warner (on paper disc) 1940: FTX-927 "Rock, rock, Old Joe Clark" & other similar items rec on tape in the 50s

HICKS, Roby & Buna - N.C., USA\ Singers/ storytellers/ banjo & fiddle\ 1941-60 - Roby, uncle of Nathan Hicks, who was the Warner's first contact when they wrote to him to order a home-made dulcimer, and Buna, Roby's wife, raised 11 children and both played fiddle, banjo and dulcimer. Roby also told stories and Jack Tales (See 928). Linzy was one of 9 sons, their only two daughters being Hattie and Rosa -- rec by Frank & Anne Warner (on paper disc) 1941 & tape 1951, Beech Mountain: FTX-923 & FTX-927 - APPLESEED APR-CD-1035 2000: "River of Life"/ "Top of Mt Zion"

TILLETT, Charles K. "Tink" - Roanoke, NC USA\ Unacc Singer\ 1940-51 - "Tink", and his son, Cliff, were Outer Banks fishermen at Roanoke and his grandson owned a fleet of deep sea trawlers. Mrs. Tillett's father kept the Bodie Head Light, where she was born. Martha Etheridge was her sister. Curt Mann lived at Mann's Harbor, which links Roanoke with the mainland. while the Culpepers were natives of Nag's Head -- rec by Frank & Anne Warner: FTX-926 - APPLESEED APR-CD-1035 2000: "Somebody's waiting for me"/ Bony on th Isle of St Helena"

TILLETT, Eleazor - Roanoke, NC USA\ unacc singer\ 1951 - APPLESEED APR-CD-1035 2000: "Come, love, come"/ Talk & "The Jolly Thresher"/ with Martha Etheridge: "Her Bright Smile Haunts Me" FTX-926

So.... all these Folktrax recordings were a) made by Frank & Anne Warner and b) released on vinyl on the Appleseed label in the USA.

I presume, therefore, that Peter Kennedy had a proper license from Appleseed to release these in the UK and pay royalties to the artists concerned and that Dick Greenhaus and CAMSCO are happy that this license can be extended to them......

I do know that the royalties involved would be very tiny amounts and I will be very happy to retract my implications here if it can be proved that I am making wrong assumptions but there is some morality under question here.