In his book “The Management of Wild Mammals in Captivity” (1964) Lee Crandall mentions that “eight or ten specimens were received at the Paris Menagerie in 1939, all of which died within one month”.
Crandall gives the source for his comments about the indri in Paris as:-
Hill, W. C. Osman (1953)
Primates. 1. Strepsirhini. (Interscience Publishers Inc., New York and University Press Edinburgh.)
which might provide further information about the Paris animals.
I was in the Zoological Society of London Library today, so took the opportunity to consult the book by Osman Hill mentioned above.
Frustratingly, this volume provides no further details of the Paris indri; Crandall evidently repeated the information almost word for word from Osman Hill’s book; the only additional information supplied is that Osman Hill learned of the Paris indri from a Dr. Madeleine Friant.