The Contemporary Artists of Southern Arizona (CASA) is a group of mixed media artists whose main focus is the promotion of mixed media as a fine art form.  Meetings are held monthly  from September to June with demos and presentations by  well-knownTucson artists.  Frequent mini-workshops and two three-day  workshops are pffered each year.  The organization exhibits members' work at several shows throughout the year.  Presently the group has over 120 members.