Cited by T. Quick, 'Puppy Love: Domestic Science, “Women's Work,” and Canine Care,' Journal of British Studies 58 (2) (2019), pp. 289-314.
Description:

'Lactol was the first of an expanding range of proprietary milk-food products developed by dog-food manufacturers such as Spratts Patent, W. G. Clarke, and Spillers & Co. during the 1910s, 1920s, and 1930s.[note: '“Spratt’s,” Bystander, 3 June 1908, 523; “Spratt’s Puppilac,” Our Dogs, no. 49 (1 October 1920):483; “Vigor,” Our Dogs, no. 51 (12 August 1921): 286; “Bob Martin’s,” Nottingham Evening Post, 18 September1930, 8.']' (294)