Honeywood Nursery catalogue, general price list, #29, February 1967:

"KILWINNING ROSE - New. This came as a seedling of Altaica from Percy Wright. Evidently crossed with Harrison's [sic] Yellow or Persian Yellow. The blooms are double, a lovely soft primrose yellow, and borne profusely for two weeks or more. The bush grows up to five feet and is fully hardy here, far superior to the old Harrison's [sic] Yellow. Each $3.00. One only to a customer."

"I have no positive record of my Kilwinning rose, but believe it to be a sib of Hazeldean, Yellow altai, and Loch Lomond, namely R. altaica x pollen of Persian Yellow. It is a cross I'd very much like to repeat."

Personal correspondance Percy Wright to Walter Schowalter Jan 18, 1971