- champagnedesousa.com en/home/
- champagnemercier.com en/mercier-house
- champagne-louis-massing.com en/house/
- elsieandgeorge.blogspot.com 2014/02/
- boll-cie.com the-house/
- bristolmuseums.org.uk georgian-house-museum/
- lvmh.com en/our-maisons/wines-spirits/
- presidenthouse.org entry-677