The second image is from 1941 and is of a hardware store's window display for Christmas. The theme was Dumbo and featured lots of various stuffed animals, including a real Bighorn sheep mounton the far left! I would guess the Dumbo circus display was from Stensgaard and Associates, a manufacturer of many store displays.
The final image is a different pose from the Pitchur Gallery in Knott's Ghost Town. The main reason I am showing this photo is to let you know of a new website featuring Knott's Berry Farm: Knott's Preserved. The website is to promote the book by Chris Merritt on the history of Knott's. The site showcases many of the photographs that were cut during the editing of the book. I recommend a visit for some great history.