I made a number of e-books, i.e. .pdf files that can be read on-line or downloaded. They even can be printed and put in the bookshelf such that the bookshelf will sag.
One of my e-books was translated in French 
by the CFE and published and printed:
An electronic version can be downloaded HERE
The books are all in the realm of toy and model trains and are categorised in 4 subjects:
Steam locomotives
Luxury trains
Special railway carriages
History
Steam locomotives: 
- A catalogue of LNER Pacifics and New York Central Hudsons
- Pacifics from Continental Europe
- Steamliners – Streamlined Steam Locomotives
- Big Boy and other Articulated Locomotives
- Elegance on Rails – Atlantics, Singles & Americans
- Eight or More – Larger and even the largest steam locomotives New!
Luxury trains: 
- This catalogue contains all CIWL carriages from my collection
- Non-CIWL luxury trains from my collection pictured and described
Special railway carriages:
- Crane Trucks – Any make, Any gauge, Any age
- Railway Mail Carriages – Many Red Ones
- Cabooses – The End of the Train
- Ales on Rails – Beer Wagons
History:
- The Unauthorised History of ASTER
- The History of Elettren
- Gauge and Scale for Toy and Model Trains
- A book full of tinplate accessories
Everything you always wanted to know about JEP S gauge trains
JEP S Gauge – The Complete Collection
Auf Deutsch: Was Sie schon immer über Züge der Spur S von JEP wissen wollten
JEP Spur S – Die komplette Kollektion
Nu ook in het Nederlands Spoorwijdte en schaal voor speelgoed- en modeltreinen
Et en français ÉCARTEMENTS et ÉCHELLES POUR LES TRAINS-JOUETS ET LES MODÈLES FERROVIAIRES
Jetzt auch auf Deutsch Spurweite und Maßstab fur Spielzeug- und Modelleisenbahnen