Original 1st printing 22 x 27&3/5" concert poster for the Grateful Dead appearing with Quicksilver Messenger Service at Panther Hall in Fort Worth, TX on 2/20/1970.
Design by Fun Kit, image is featured in the Art of Rock book on page 383 (plate 4.161).
Medium flat stock silkscreen poster (printed with extra-bright day-glo florescent ink) is in SPARKLING near mint (A- to A-/B+) condition; aside from the slightest whisper of surface wear (a few ultra-tiny hairline ink cracks/stress dings hiding within the image area), it is a nearly-unbeatable example of this frequently-requested Grateful Dead concert poster from the Lone Star state.
While no tapes from the show have surfaced, check out a superb account of the Dead's touring activities during this period (including snapshots from the following night's show in San Antonio);
http://lostlivedead.blogspot.com/2010/09/grateful-dead-tour-itinerary-february.html