I rough sorted a book with the title Vulgar Latin to Portuguese or something like that several weeks ago. Policy of the Friends of the Library is that rough sorters may check out for a period of two weeks books that they have been rough sorting. The comments on Vulgar Latin in the book were very interesting. Apparently the Vulgar was using periphrastic constructions for what were separate forms as early as the Republic. I hope to find the book during the Spring Sale or the Fall Sale and buy it.