I went to Danny Gatton's Estate Sale a couple years back. The auctioneers had no idea what they were selling. It rained all day, and dozens of pieces of original artwork, rare LPs, memorabilia, etc. were laid out in the rain with just a plastic sheet covering them. One item was Danny's personal copy of REDNECK JAZZ, signed by the band, friends and family. It, and alot more stuff, got soaked. Kinda sad.
To learn more about Danny Gatton, I'd strongly suggest his bio, UNFINISHED BUSINESS - THE LIFE AND TIMES OF DANNY GATTON by Ralph Heibutzki that was released in 2003 or 2004.
There's also two other famous DC area guitarists worth looking into, Roy Buchanan (who also committed suicide in the mid 1970's). There's a bio out on him called AMERICAN AXE by Phil Carlson. Both are released on Backbeat Books.
Finally, there's Link Wray. Link lived in the DC / MD area for several years in the 1950's and 1960's. Heavy metal, grunge, punk, and rock guitar in general can be traced to his release of "Rumble" in 1958. He's 75 years old and still playing rock and roll. Check out
WraysShack3Tracks.com
For a good website on 50's - 70's Maryland and DC area rock and roll, check out
http://www.capitolrock.com