In this Bulletin Irises in the extensive collection present at Missouri Botanical Gardens (in 1925) are discussed and several black and white plates of old historic irises are shown. Since the paper is over 25 pages long it is not reproduced here but you may visit it in the Biodiversity Heritage Library at this link;
Bulletin of the Missouri Botanical Garden, vol XIII, No. 3, March
For more information on historic Irises visit the Historic Iris Preservation Society at
-- BobPries - 2013-11-25