sentences:  Carl and Karin Larsson declared themselves overwhelmed by such success.Carl Larsson considered his monumental works, such as his frescos in schools, museums and other public buildings, to be his most important works.His last monumental work, "Midvinterblot" ("Midwinter Sacrifice"), a oil painting completed in 1915, had been commissioned for a wall in the National Museum in Stockholm (which already had several of his frescos adorning its walls).