Go get these! The very early ones are interesting, but contain a bit less research. The 1920s through mid to late 1950s are fascinating! They contain such a wealth of knowledge and personalities. Rose research supported by the ARS in the 1970s yielded some rather interesting items. It's wonderful getting to read Wilhelm Kordes, Tantau, Boerner, Meilland, Le Grice, etc. writing about their passions. There are very telling reports from Europe during WWII written by rose lovers and producers. Now these rather rare and harder to find things are available electronically and free, there is no excuse! You are guaranteed to find many things there to interest and delight you. Thanks, Henry! Kim