During the period from which these images are taken, the breed name was usually spelled with an e on the end.
Image from: Leighton, R. (1907). The new book of the dog. London, England: CassellAn image used to represent the breed in the book: Shaw, V.K. (1913). The encyclopaedia of the kennel. London, England: George Routledge & Sons, LimitedBreed representative in the book: Mason, W. E. (1915). Dogs of all nations. [S.l., s.n.]Dogdom, May 1918Dogdom, December 1918Fuertes, L.A. (1919). The book of dogs. Washington, D.C.: The National Geographic SocietyThe Dog Fancier, September 1920“Ch. Monstan of Argentian” Source: Bruette, W.A. (1921). The complete dog book. Cincinnati, Ohio: Stewart Kidd CompanyDogdom, October 1921Leighton, R. (1922). The complete book of the dog. London: Cassell and Company, Ltd.Image used to represent the breed in the book: Judy, W. L. (1925). The dog encyclopedia: a complete reference work on dogs. Chicago, Illinois: Judy Publishing Company.Ch. Dobrynia pictured in: Bowers, F. (1936). The dog owner’s handbook. Boston: Houghton Mifflin.Country Life, June 1919Dogdom, November 1921