House & Garden (1929) 55: 82 Je ‘29
How Roses Come By Their Names
J. H. Nicolas

p. 140
particular seedling; Pernet informed him that it was not available as it was already dedicated to his friend Antoine Rivoire, President of the Horticultural Society of Lyons; the Prince insisted that such was the Rose he wanted, so Pernet showed him the twin of the same cross (Hybrid Tea x a Bourbon seedling) and Prince de Bulgarie thus came on the market, although it is similar to Antoine Rivoire. When Pernet told me the story, he did not mention the amount received beyond that it was "sufficient". The Prince had just concluded another loan with the French government and he felt flush!