May 1977 represents the peak of the band's "1977 peak" touring period. The 14-CD scope suggests particularly extensive performances, with longer sets and more ambitious improvisations than even other 1977 shows.

This May 1977 box set includes 14 CDs and the complete shows for 5/11/77, 5/12/77, 5/13/77, 5/15/77, and 5/17/77.  Includes softcover book and slipcase. 8 in x 6 in x 2 in.

May performances would fall into the later spring Dead touring season, when venues and audiences had settled into touring patterns, and the band had achieved maximum musical communication.

The 14-CD scope places this collection in the premium tier of Dead box sets, comprehensive documentation of performances that ran for substantial periods each evening.