- ^ Williams, Richard (1. oktober 2010). «Circus Drawings». Besøkt 18. oktober 2020.
- ^ «"Circus Drawings", a New Short by Richard Williams». Cartoon Brew (engelsk). 3. november 2010. Besøkt 18. oktober 2020. «Harvey Deneroff reported on his blog that 77-year-old animation legend Richard Williams premiered a new short called Circus Drawings at the 29th Pordenone Silent Film Festival in Italy last month. In Williams’ own words, the film had been gestating for a long time: “In 1953 I was a young artist of twenty, living in Spain near a village circus, where I drew the acrobats, clowns and onlookers. Twelve years later I filmed my drawings to an original score but didn’t complete the film. Now that I’m 77, I’ve finished the film by animating my original drawings.”»