The International Steam Pages
International Steam Journals
These are the (traditional) journals which support international travellers for steam - let me know of any other sources.
Continental Railway Journal
FERNEXPRESS (formerly Dampf & Reise) has German language articles on railways and travel around the World. Check out their home page.
Lok Report has German language reports and its own home page.
For those (like me) with a narrow gauge inclination:
Narrow Gauge World, a bi-monthly UK publication with a significant international slant
Voie Etroite a bi-monthly French publication with a significant international slant