Here is a reference:

"ANDENKEN AN GARTENDIREKTOR SIEBERT. H. Kiese & Co., 1923. Lambertiana. Semi-double, rosy pink and yellow flowers in clusters. A fair pillar rose or big bush of the Multiflora type, scarcely worth the bother of learning its name."

Source: "Climbing Roses", G.A. Stevens, New York 1933