Jamie Holding's tabs are still a favourite of mine. At least one of his e-books finds it's way onto my music stand every few weeks. His web-site is long gone, unfortunately, but a copy of it can be found on the "Archive Machine", with a link to a free e-book here,
http://web.archive.org/web/20130607053401/http://www.classicalukulele.co.uk/free-ebook/ . Follow the menu links for other sample pages. Jamie was still answering e-mails and mailing pdf's of his other publications relatively recently.
A lot of music arranged for descant or tenor recorder will translate to the re-entrant ukulele directly, these recorders also having a lowest note of "C" and much early music is of relatively limited range ... that's not to say it's easy. Some of the timing changes can be quite the PITA to get to grips with, which is, of course, half the charm of it
Enjoy :music: