According to Hangar 18, this new print by Dave Hunter is currently available (only a few remain).  Here is the details according to Hangar 18:

“Dave Hunter’s newest poster is out of this world!!! This gig poster was created for the worlds’ first international Ibogaine Conference being held from March 20 – 28, 2009 in Sayulitas, Mexico. A Tribute to Howard Lotsof! Only 75 posters were printed at Hangar 18 over the course of a weekend. Purchase one directly from the artist now.”