In I Will Fear No Evil, what is Joan Eunice Smiths (Eunice Evans Brancas) race?
One answer is that Joan Eunice’s race is indeterminate, and deliberately so. There is no explicit evidence in the book that she is either black or white. It is believed that Heinlein deliberately made her race a cipher, and is known to have worked on the book with two photos of beautiful women in front of him – one blonde, one black. However, Heinlein later made explicit references in correspondence to Joan Eunice as being black. The careful reader is invited to judge for him/herself.