Knitted Lace (Kunst-stricken) by Marie Niedner & Gussi von Reden
Knitted Lace II (Kunst-Stricken II) by Marie Niedner and Gertrud Billforth and Edith Wallach and Margarete Lang.
These books are in German with charts and some editing by Lacis. Old patterns for some pretty advanced lace.
To order: e-mail MOONRISELaceKnitting@gmail.com or call 484-350-3022