Gravity Falls - 2012 The Time Traveler's Pig 1-9 was released on:
USA: 29 June 2012 (San Diego Comic-Con)
USA: 24 August 2012
Travelers - 2013 was released on: USA: 2013
The Travelers - 2007 was released on: USA: 1 January 2007 (limited)
Space Travelers - 2009 was released on: USA: July 2009
Gravity Falls - 2012 Irrational Treasure 1-8 was released on: USA: 29 June 2012 (San Diego Comic-Con) USA: 17 August 2012
Gravity Falls - 2012 Bottomless Pit 1-14 was released on: USA: 29 June 2012 (San Diego Comic-Con) USA: 1 March 2013
Gravity Falls - 2012 Little Dipper 1-11 was released on: USA: 29 June 2012 (San Diego Comic-Con) USA: 28 September 2012
Gravity Falls - 2012 Gideon Rises 1-20 was released on: USA: 29 June 2012 (San Diego Comic-Con) USA: 2 August 2013
Gravity Falls - 2012 Land Before Swine 1-18 was released on: USA: 29 June 2012 (San Diego Comic-Con) USA: 28 June 2013
Gravity Falls - 2012 The Hand That Rocks the Mabel 1-4 was released on: USA: 29 June 2012 (San Diego Comic-Con) USA: 6 July 2012
The Six Travelers - 2002 was released on: USA: May 2003 (Kalamazoo Animation Festival International)
Ambiguous Travelers - 2007 was released on: USA: 26 March 2007 (Hollywood DV Festival)
Time Travelers - The Pattern - 2012 was released on: USA: 14 December 2012 (internet)