Angels 2009 Calendar. Angels have appeared in works of art for many millennia. Various styles of Angel shaped beings appear in ancient Mesopotamian and Greek art and are considered to be the inspiration for many of the popular Christian images of angels we see and recollect today. Angels have continued to remained a popular subject for Byzantine and European paintings and sculpture and this classic 2009 Angels square wall calendar celebrates these supernatural beings through a series of high quality images taken of popular artwork depicting angels.