What about this one?
http://gallica.bnf.fr/ark:/12148/CadresFenetre?O=NUMM-93055&M=chemindefer
Gonzalo, the Lexicon graecolatinum link you highlight is interesting (I have no Greek). It’s a Greek - Latin dictionary and alphabetised by the Greek word only (as I judge from what I’ve browsed so far). A pity it can’t be downloaded in one pdf file or otherwise, because it’s awkward to browse.
Grover Furr’s FTP (advertised at http://www.chss.montclair.edu/english/furr/) didn’t work for me, either. I emailed him to highlight the problem. This Du Fresne Du Cange master work can be found at the Bibilotheque Nationale Francaise site at http://gallica.bnf.fr/ark:/12148/bpt6k51561t Same place as the Greek-Latin dictionary and same problem: it’s murder to browse.
In order to get it you must click on “télécharger”, and download it by means of right-click on “Save as…”.
By the way, I had been mistaken. What I really wanted to refer to is the next one:
http://www.grexlat.com/biblio/wagner/index.html
Excuse me, sodales.
Oops. I hadn’t noticed the télécharger option. Wagner Lexicon --great, Gonzalo. It’s exactly what I’ve been a long time seeking, especially for its listing of synonyms and antonyms, and all designed for practical teaching-learning usage, it appears to me, in spoken and reading contexts. It’s really, really useful. Many thanks in many ways for many things. Converting the Wagner to machine readable form would mean you were right, Terti Roberte, to caution against repeating work done elsewhere already.
I cannot figure the happiness of Amadeus when he gets the lexicon! 
Are you going to print the lexicon, Adrianus?
I may try to OCR it, Gonzalo. But, to my naked eye I think that the online edition may not OCR very well. Worth a try. It is big, isn’t it (743 pages), so I won’t print it (despite preferring it in print). I’m delighted. Many thanks to you. 
Well, I have got an usually practice which consists in making print the two faces of paper and two pages by face of paper.
Smart way. Maybe I’ll do the same.
I got a reply from http://www.chss.montclair.edu/english/furr/ (I couldn’t get the pdfs from his site following the FTP instructions given) who says to get someone who knows how to use FTP because the server there works fine. That’s me in my place. Maybe I was doing something funny. 
You set me up, edonnelly, by suggesting someone email the guy but I forgive you. 
Macte!!!
Sorry. It definitely was down when I tried yesterday, but certainly is up now.
There’s some interesting stuff in there.
Mactissime! Iam duo lexica habeo!
You know I was only kidding about ‘setting me up’, Eduarde (preferne ‘edonnelly’?). I had checked the FTP wasn’t working myself before emailing, as you sensibly suggested. And there is interesting stuff indeed on the Montclair site, so much gratitude to you. I’m having a field-day downloading.
I know you were kidding. It’s great that everyone can get those books. I’d just suggest to not get too many at once, or he may eventually close off the world.
Ed (is fine).
I didn’t think of that. You’re right. I’ll back off downloading.
I forgot to tell you that Wagner’s Lexicon has been bookmarked -a fact which is truly useful.
I don’t understand, Gonzalo. Can you explain a bit for my benefit? Where bookmarked?
I only just noticed, Ed, that the author of the site housing the Maigne d’Arnis Lexicon specifically asks people to download only a few pdfs and not the whole bunch, as it puts too much strain on their university server. I didn’t read that first paragraph. 
Bookmarks of a PDF document are signed pages which allow you to browse from any page to that one which you would be interested to check, ex. gr., if you are looking for the word segnitia, -æ, you have two options:
-To come across the pages seeking for the exact paragraph (i.e., to browse the pages).
-To search in a index of letters (which makes the duty easier)
Well, Wagner’s Lexicon has been bookmarked to that aim.
The index of letters which I have referred to is available if you open the PDF file from Adobe software. (I use the professional version, but I suppose it would be also available from the reader.)
If you do not know yet what I am talking about, let me know it and I will explain it carefully.
Regards,
Gonzalo
Thanks, Gonzalo. I’m using Acrobat Pro but I didn’t catch on that you were referring to the bookmark indexing within the PDF doc itself. I understand what you’re referring to.
(repeated)
Hello, my dear Adrianus,
I explain you it: If you are using the Professional Edition, as you have said, please right-click at any page and you will get a lot of options to manage with. Well, click “Add bookmarks”. Does it work?
I do not know how to make it more clear… Just by right-clicking and selecting “Add bookmarks” you would be able to see the Bookmarks which I refer to.
Excuse my delay, I have started my Scholar Year and I got my Internet connection broken for a week.
Yours,
Gonzalo