Board Thread:General Discussion/@comment-1038387-20161118110832/@comment-1257201-20161119053417

Makes sense. The woman's name "Julie" used to be extremely common. Wikipedia says that in the USA, "Julie was consistently in the top one-hundred registered female names in the forty years between 1951 and 1991; peaking at #10 in 1971."

I'm sure that Julie Schwartz wasn't the only male to use this nickname, but offhand I can't think of any others. And even the male versions "Jules" and "Julius" weren't very common in the 20th century.

The Dutch editors may have also been thinking of French, in which "Julie" is exclusively female. Dutch Wikipedia identifies Julie as a French female name:

But I hope they realized he was male when they saw the cover to !