As previously reported, the group will hit the Midwest and East Coast in July. The just-announced additions have them spreading to the South and West Coast over the next two months, running through September 22, when they’ll wrap in Woodinville, Wash.

The band released its self-titled debut album in 1969 after David Crosby (The Byrds), Stephen Stills (Buffalo Springfield) and Graham Nash (The Hollies) decided to pool their talents. Stills recruited fellow Buffalo Springfield member Neil Young for the group’s second album, Déjà Vu, and Crosby, Stills, Nash & Young was born.

Young soon left, however, reuniting sporadically with the trio over the next few decades – most recently for 1999’s Looking Forward and a pair of tours in the years following. This year, Young presumably has his hands full with his Greendale album/tour/traveling production.

Crosby recently finished a tour with his side project CPR, which features guitarist Jeff Pevar and Crosby’s son James Raymond on keyboards. Pevar and Raymond will reportedly join Crosby, Stills & Nash onstage this summer.