"The Good Old Boys sessions at Mickey's studio were a special time for all concerned, as Garcia had a chance to produce artists he had long admired: Don Reno (banjo), Chubby Wise (fiddle), Frank Wakefield (mandolin) and David Nelson (guitar). Two [sic] days of pure bluegrass heaven for all of us, but especially for Garcia. Lotsa laughin' 'n' apickin'. It was a good ol' time" (Brown 1986, 26).
ref: "GDR: Financial: RR: Accounting Sheets 1974-1976," Grateful Dead Archive, Special Collections, University of California Santa Cruz, MS.332.Ser. 2, box 70, folder 9. This gave dates as 26-27-28, but it seems the 26th was dropped and the 29th was added as far as known recordings reveal.
Historical
The Weather Underground radical student group bombs the United States Department of State main office in Washington, D.C.