The 1939 Checklist records; "Hans Peter Sass (1868- ), born in Alt Duvestedt, Germany, and educated there until his parents emigrated to America in 1884 and settled on a farm near Omaha. He did general farming until 1903 when he purchased 80 acres near Washington, Nebraska and began giving considerable time to flower growing. He had always been a student of botany and the writings of Rev. C.S. Harrison turned his attention to Peonies and Irises. Nw (1939) owner of Midwest Gardens, Elkhorn, Nebraska. He considers 'King Tut' his most important Iris as its "blood" went into nearly all his later varieties. 'Autumn Queen' is another gem. While 'Rameses' won the Dykes Medal.
1937 CatalogSee other nurseries
1930 catalog Sass Sass 1930 For more information on historic Irises visit the Historic Iris Preservation Society at http://www.historiciris.org/ Main.BobPri...
1932 catalog Sass https://www.biodiversitylibrary.org/item/260893#page/3/mode/1up For more information on historic Irises visit the Historic Iris Preservation Soc...
1933 Catalog Sass https://www.biodiversitylibrary.org/item/266763#page/3/mode/1up For more information on historic Irises visit the Historic Iris Preservation Soc...
1934 Catalog Sass; Jacob https://www.biodiversitylibrary.org/item/271323#page/3/mode/1up Introductions in this catalog by the Sass brothers: H.P. Sass: : 'Abel...
1935 catalog Hans Sass https://www.biodiversitylibrary.org/item/273596#page/3/mode/1up For more information on historic Irises visit the Historic Iris Preservatio...
1935 catalog Sass, Jacob https://www.biodiversitylibrary.org/item/272846#page/3/mode/1up For more information on historic Irises visit the Historic Iris Preservat...
1936 Catalog Sass, Hans ; Midwest Gardens https://www.biodiversitylibrary.org/item/275910#page/3/mode/1up For more information on historic Irises visit the Histor...
1936 catalog Jacob Sass https://www.biodiversitylibrary.org/item/275307#page/3/mode/1up For more information on historic Irises visit the Historic Iris Preservati...
1937 catalog Hans Sass https://www.biodiversitylibrary.org/item/279405#page/3/mode/1up For more information on historic Irises visit the Historic Iris Preservatio...
1937, Sass Catalog, Jacob Sass; Maple Road Gardens to view click on image To return to list of Nurseries Introductions in this catalog by the Sass brothers: H. ...
1938 catalog Hans Sass https://www.biodiversitylibrary.org/item/282766#page/3/mode/1up For more information on historic Irises visit the Historic Iris Preservatio...
1938 catalog Jacob Sass https://www.biodiversitylibrary.org/item/282822#page/3/mode/1up For more information on historic Irises visit the Historic Iris Preservati...
1939 catalog Hans Sass https://www.biodiversitylibrary.org/item/284922#page/3/mode/1up For more information on historic Irises visit the Historic Iris Preservatio...
1939 catalog Sass, Jacob https://www.biodiversitylibrary.org/item/284943#page/3/mode/1up For more information on historic Irises visit the Historic Iris Preservat...
1940 catalog Hans Sass https://www.biodiversitylibrary.org/item/286564#page/3/mode/1up For more information on historic Irises visit the Historic Iris Preservatio...
1940 catalog Jacob Sass https://www.biodiversitylibrary.org/item/286693#page/3/mode/1up For more information on historic Irises visit the Historic Iris Preservati...
1941 catalog Hans Sass https://www.biodiversitylibrary.org/item/290104#page/3/mode/1up For more information on historic Irises visit the Historic Iris Preservatio...
1942 catalog Hans Sass https://www.biodiversitylibrary.org/item/292529#page/3/mode/1up For more information on historic Irises visit the Historic Iris Preservatio...
1942 catalog Jacob Sass https://www.biodiversitylibrary.org/item/292081#page/3/mode/1up For more information on historic Irises visit the Historic Iris Preservati...
1943 catalog Hans Sass https://www.biodiversitylibrary.org/item/294833#page/3/mode/1up For more information on historic Irises visit the Historic Iris Preservatio...
1943 Catalog Jacob Sass https://www.biodiversitylibrary.org/item/294690#page/3/mode/1up For more information on historic Irises visit the Historic Iris Preservati...
1944 catalog H. P. Sass https://www.biodiversitylibrary.org/item/296536#page/3/mode/1up For more information on historic Irises visit the Historic Iris Preservati...
1944 catalog Jacob Sass https://www.biodiversitylibrary.org/item/296375#page/3/mode/1up For more information on historic Irises visit the Historic Iris Preservati...
1945 catalog Hans Sass https://www.biodiversitylibrary.org/item/298143#page/3/mode/1up For more information on historic Irises visit the Historic Iris Preservatio...
1945 catalog Jacob Sass Two copies available, use either link. https://www.biodiversitylibrary.org/item/298092#page/3/mode/1up For more information on historic Ir...
1947 Maple Road Garden For more information on historic Irises visit the Historic Iris Preservation Society at http://www.historiciris.org/ Main.mikeu 18 Jan ...
1948, Jacob Sass, Maple Road Gardens Catalog Click on image to view catalog For more information on historic Irises visit the Historic Iris Preservation Society a...
1949, Sass Bros. Maple Road Catalog Click on image to view catalog Also in BDHL = https://www.biodiversitylibrary.org/item/305157#page/3/mode/1up For more infor...
Sass Brothers 1950 Catalog Click on image to view catalog; Sass 1950 For more information on historic Irises visit the Historic Iris Preservation Society at ...
Sass brothers, Maple Road Gardens 1951 Catalog Click on image to view catalog; Sass 1951 For more information on historic Irises visit the Historic Iris Pres...
Sass Brothers, 1952 catalog Click on image to view catalog; Sass 1952 For more information on historic Irises visit the Historic Iris Preservation Society at...
Sass Brothers, Maple Tree Road Iris Gardens, 1953 Catalog Click on image to view content Sass 1953 For more information on historic Irises visit the Historic...
Sass Brothers, Maple Tree Road Nursery, 1954 Catalog For more information on historic Irises visit the Historic Iris Preservation Society at http://www.historicir...
Sass Brothers, Maple Tree Road Nursery, 1955 Catalog Click on image to view catalog; Sass 1955 For more information on historic Irises visit the Historic Iri...
Sass Brothers 1956 Catalog Click on image to view catalog Sass 1956 For more information on historic Irises visit the Historic Iris Preservation Society at h...
1930 catalog Sass Sass 1930 For more information on historic Irises visit the Historic Iris Preservation Society at http://www.historiciris.org/ Main.BobPri...
1932 catalog Sass https://www.biodiversitylibrary.org/item/260893#page/3/mode/1up For more information on historic Irises visit the Historic Iris Preservation Soc...
1933 Catalog Sass https://www.biodiversitylibrary.org/item/266763#page/3/mode/1up For more information on historic Irises visit the Historic Iris Preservation Soc...
1934 Catalog Sass; Jacob https://www.biodiversitylibrary.org/item/271323#page/3/mode/1up Introductions in this catalog by the Sass brothers: H.P. Sass: : 'Abel...
1935 catalog Sass, Jacob https://www.biodiversitylibrary.org/item/272846#page/3/mode/1up For more information on historic Irises visit the Historic Iris Preservat...
1936 catalog Jacob Sass https://www.biodiversitylibrary.org/item/275307#page/3/mode/1up For more information on historic Irises visit the Historic Iris Preservati...
1937, Sass Catalog, Jacob Sass; Maple Road Gardens to view click on image To return to list of Nurseries Introductions in this catalog by the Sass brothers: H. ...
1938 catalog Jacob Sass https://www.biodiversitylibrary.org/item/282822#page/3/mode/1up For more information on historic Irises visit the Historic Iris Preservati...
1939 catalog Sass, Jacob https://www.biodiversitylibrary.org/item/284943#page/3/mode/1up For more information on historic Irises visit the Historic Iris Preservat...
1940 catalog Jacob Sass https://www.biodiversitylibrary.org/item/286693#page/3/mode/1up For more information on historic Irises visit the Historic Iris Preservati...
1942 catalog Jacob Sass https://www.biodiversitylibrary.org/item/292081#page/3/mode/1up For more information on historic Irises visit the Historic Iris Preservati...
1943 Catalog Jacob Sass https://www.biodiversitylibrary.org/item/294690#page/3/mode/1up For more information on historic Irises visit the Historic Iris Preservati...
1944 catalog Jacob Sass https://www.biodiversitylibrary.org/item/296375#page/3/mode/1up For more information on historic Irises visit the Historic Iris Preservati...
1945 catalog Jacob Sass Two copies available, use either link. https://www.biodiversitylibrary.org/item/298092#page/3/mode/1up For more information on historic Ir...
1947 Maple Road Garden For more information on historic Irises visit the Historic Iris Preservation Society at http://www.historiciris.org/ Main.mikeu 18 Jan ...
1948, Jacob Sass, Maple Road Gardens Catalog Click on image to view catalog For more information on historic Irises visit the Historic Iris Preservation Society a...