I came across this website and they have numerous books on our clan. These books are
"print on demand" and will require about 10 weeks for delivery. Enjoy!!!!
CAMPBELL Clan in Va., by L.L. Campbell. 154 p. 1954. $27.00
CAMPBELL. House of Argyll & the collateral branches of the Clan Campbell from the year
420 to  239 p. 1871 (Scotland) $37.00.
CAMPBELL. Hist. sketches of the Campbell, Pilcher & kindred fams., incl. the Bowen,
Russell, Owen, Grant, Goodwin, Amis, Carothers, Hope, Taliaferro & Powell families, by
M.C. Pilcher. 444 p. 1911 $68.50.
CAMPBELL. The Campbells of Drumaboden on the River Lyennon, new Rathmelton, Co. Donegal,
North of Ireland, by John F. Campbell. 147 p. 1925 $24.00.
CAMPBELL. Gen. of the Campbell, Noble, Gorton, Shelton, Gilmour & Byrd fams, &
numerous other fams. of prominence in Amer., with whom they have intermarried, by M. C.
Whitaker. 230 p. 1927 $36.50.
CAMPBELL. Earliest Campbell families in Maine, by Dr. L.A. Campbell, 77 p., typescript
These books can be found at: http://www.higginsonbooks.com/
Hope you find your links.