From the Downtown in December (http://www.downtownindecember.com/FreeMuseumSundays.aspx) website:

Free Museum Sundays

Downtown In December invites holiday visitors and families to fill their Sundays with culture, art, history and music during Free Museum Sundays. For three Sundays in December, downtown museums will be open for free from 12 - 5 p.m.

Dec. 2 - Oklahoma City Museum of Art,
Dec. 9 – American Banjo Museum
Dec. 9 – Red Earth Museum & Gallery, with an open house event
Dec. 16 - Gaylord-Pickens Oklahoma Heritage Museum

Don't miss out on this opportunity to have a great time... and learn a little too!

Thanks for the update John. I'll definitely be checking that out.

John, thanks again for bringing this up. I did go today to the OKCMOA and it was packed. The exhibits including the traveling "American Moderns" were excellent and it was a great way to spend a few hours on a beautiful Sunday afternoon.