In dedicated copies of his books, Jung gave private acknowledgment of her involvement. Her copy of Psychological Types bears the dedication:
This book, as you know, has come to me from that world which you [Toni] have brought to me. Only you know out of which misery it was born and in which spirit it was written. I put it in your hands as a sign of gratitude, which I cannot express through words ~The Black Books, Vol. I, Page 97
Likewise, her [Toni’s] copy of Psychology and Alchemy (1944) bears a dedication to his “soror mystica.” In public, he acknowledged her active role in all the phases of analytical psychology in his introduction to her collected papers. ~The Black Books, Vol. I, Page 97