I've been using the NJ7P tube database for years. Last week I noticed my bookmarked link was broken and didn't think much of it as my internet service was a tad lumpy on other sites as well. Turns out the site has been updated and if you haven't been there in a while, start here:http://www.nj7p.info/
Notice the nice assortment of military manuals and JAN / VT reference data. Good to see another source of this data.
As for the tube lookup feature: http://www.nj7p.org/Common/Tube/SQL/Tube_query.php?index=1
Works as well as ever.