
All her written texts i can find after she moved to France she referred to herself as "Marie"
In her biography of Pierre Curie, she herself wrote of herself before she married "Mon nom est Marie Sklodowska"
here's a letter she wrote to the president and signed simply "Marie Curie" https://www.docsteach.org/documents/document/letter-from-mar...
https://www.amazon.com/Pierre-Curie-Autobiographical-Notes-M...
"Pierre Curie: With Autobiographical Notes by Marie Curie"
It was published in 1923 by The Macmillan Company, and I've read somewhere that Marie Curie never allowed any new releases afterwards.
