In October 2006 Stephane Faucourt released Meccano to Trilogo - a 144 pages full-colour book covering vintage Meccano and Trilogo lines.
The book also contains detailed matrices that attempt to catalogue all known Meccano and Trilogo Back Card combinations as well as vehicles.
These matrices are updated and available only at Rebelscum and Stephane has just released the Trilogo back card combinations update 1.2 (previous was March 2007) with the latest finds.
Stephane has also released a first update (since the book publication) of the Meccano - Trilogo vehicles and playsets;
You are more than welcome to check on your collections are submit new variations.
Here's the page with the update links:
Meccano and Trilogo Matrices