These websites and books are treasure troves of information...
Fountain Pen Network
The world's largest online community of fountain pen enthusiasts. You will find lots of very valuable information on modern and vintage pens, restoration tips from pros and hobbyists, and so much more! The community is warm, welcoming, and very generous. I highly recommend becoming a member - its free!
Great resource for information on vintage Montblancs.
Nice collection of vintage catalogues and advertisements.
Collectible Stars I
Arguably the most important book that any vintage MB collector can have.
Collectible Stars - 1946 to 1979
A quick follow up to Collectible Stars I, and precursor the soon-to-be-released comprehensive Collectible Stars II.
Montblanc in Denmark
Everything you need to know about beautiful Montblancs manufactured in Denmark.
Montblanc Pens Made in Spain
Everything you need to know about beautiful Montblancs manufactured in Spain.
The Montblanc Diary and Collector's Guide
The Bible for Vintage Montblanc Collectors.
My Favourite Restorers
Franics Goossens - Belgium
Francis is always my first choice. His work is unparalleled, just like his professionalism and generosity.
Brad Torelli - USA
Brad can do some seriously creative and complicated restorations.