The work of listing 1894-2006 violin concertos is complicated in my opinion by all those concertos that were written for doctoral dissertations, stored in libraries and never performed or recorded (perhaps a few are worth rediscovering, I do not doubt; Prokofiev's first piano concerto and Myaskovsky's first symphony were doctorate works too, of course. So I don't mean to imply otherwise. But a cursory scan with a clever search, of, say, the New York Public Library catalog at http://catalog.nypl.org reveals a ... lot... of violin concertos written in the inter-war years, for example, by, I think, completely unfamiliar names.)
Eric
Eric