Journal of Horticulture (June 4, 1908) volume 56, pp. 514-516 Hybridising Among Wild Roses Prepared for American Breeders' Association by Dr. W. Van Fleet, Little Silver, N.J.
"Other crosses of white rugosa on Clothilde Soupert, a tea-polyantha variety, resulted in the splendid continuous-blooming varieties, New Century, white, blush centre, and Sir Thomas Lipton, pure white, that are well worth growing in the most exclusive gardens."
