"Vincent Brooks, Day and Son Limited," Science Museum Group, http://collectionsonline.nmsi.ac.uk/detail.php?type=related&kv=20213&t=people (accessed 07/11/2015)
"Vincent Brooks, Day & Son," Wikipedia, https://en.wikipedia.org/wiki/Vincent_Brooks,_Day_%26_Son (accessed 07/11/2015) [unvetted]