Ka cika wannan magana: A cikin waɗanda ya zana hotunansu akwai Martin A. Ryerson, J. Ogden Armour, N. W. Harris, Harry P. Judson, da kuma Peter S. Grosscup. Ya karbi lambar azurfa a gasar
Saint Louis Exposition a 1904; lambar zinare a Nunin Kasa da Kasa, Munich, a 1905, da kuma a Paris Salon a 1913 (Ba'amurke na farko da aka girmama shi); kuma an ba shi lambar girmamawa a Panama <unk> Pacific International Exposition a 1915. Parker kuma shine shugaban kamfanin Rodin Studios, wanda ya haɓaka gidajen haɗin gwiwar masu fasaha iri ɗaya a cikin Birnin New York.