San Ildefonso Pueblo Halloween Celebration 2015 10/23/2015 by sisllc1 San Ildefonso Services, LLC participated in the San Ildefonso Pueblo Halloween Celebration 2015 at the local gymnasium. Fun was had by all who attended and dropped by our SIS, LLC booth. Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related