"For example, the rose Harison's Yellow kills to the snowline at Parkside every winter, whereas here at Saskatoon it is abundantly hardy. Prof. J. T. Maney's Ames 6 (Multiflora x Blanda) behaves similarly, and so does Prof. N.E. Hansen's Alika. So does my Eureka rose. The latter is a seedling of Ames 6 with semidouble white flowers instead of single pale-pink ones, that I raised about 1945 while at Moose Range.

Percy Wright Autobiography, Volume IV, Page 1008