the grateful dead played at the palm gardens in nycity on december 22, 23, and 24 1967. the blog, listed at the end, recounts the 'group image' band / collective from nyc in 1967 and includes these references to the GD.
http://1.bp.blogspot.com/-ELCsa1zR-W8/Tsa74iE9YEI/AAAAAAAATWA/-OPoBESUDx4/s1600/122167groupimage.jpg village voice 12-21-67 issue = christmas decorations poster with 'grateful' inked out http://2.bp.blogspot.com/-trx7R2h2KD4/Tsa732ngKqI/AAAAAAAATV4/9OVy5uPGfrY/s1600/121467groupimage.jpg 12-14-67 village voice "Scenes" column - mentions the GD will play http://4.bp.blogspot.com/-eJVLt-u2Tg4/Tsa73m0T4PI/AAAAAAAATV0/W76LpfAUVVg/s1600/120767groupimage2.jpg 12-07-67 village voice - poster showing all groups http://streetsyoucrossed.blogspot.com/2011/11/1967-ads-revisited-group-image-at-palm.html 1967 Ads Revisited: The Group Image at the Palm Gardens I-) ihor