1920 catalog H.W. Groschner Glen Road 1920 list For more information on historic Irises visit the Historic Iris Preservation Society at http://www.historiciris...
1921 "catalog"/opinion Groschner Groschner 1921 For more information on historic Irises visit the Historic Iris Preservation Society at http://www.historicir...
1922 catalog Groschner Groschner 1922 For more information on historic Irises visit the Historic Iris Preservation Society at http://www.historiciris.org/ ...
1926 catalog Groschner https://www.biodiversitylibrary.org/item/231618#page/3/mode/1up For more information on historic Irises visit the Historic Iris Preservatio...
1927 Catalog Groschner https://www.biodiversitylibrary.org/item/233608#page/3/mode/1up For more information on historic Irises visit the Historic Iris Preservatio...
1928 catalog Groschner https://www.biodiversitylibrary.org/item/239068#page/3/mode/1up For more information on historic Irises visit the Historic Iris Preservatio...
1929 catalog Groschner https://www.biodiversitylibrary.org/item/244058#page/3/mode/1up For more information on historic Irises visit the Historic Iris Preservatio...
1930 catalog Groschner https://www.biodiversitylibrary.org/item/248447#page/3/mode/1up For more information on historic Irises visit the Historic Iris Preservatio...
1932 catalog H. W. Groschner Fairy Gardens https://www.biodiversitylibrary.org/item/259102#page/3/mode/1up For more information on historic Irises visit the Histo...