One of the things HvS did as part of her Montessori training was prepare a curriculum book. This was a labor of love for my mother and Mrs. Montessori was - my mother told me - very impressed with it. HvS told me she loaned it to a nun who was interested in the Montessori method and it was never returned.
As HvS's executor, I have been hunting for this book in order to reprint it for use in Montessori schools and and for perusal by those interested in the history and practice of the Montessori method. Recently some Montessori School files were cleaned out in London and a copy of the missing book was retrieved - a long and interesting story that got the information to me via someone in Nairobi - and I therefore now have it,
However, I am still trying to track down the original book, because the copy is in black and white whereas the original was in color.