think Ljubljana-archive would be also for Trnovo ob Soči.
diocesan-archive Ljubljana (former Laibach):http://lj.rkc.si/?id=11&fmod=2

Trnovo ob Soči: http://maps.google.at/maps?hl=de&q=Trnovo%20ob%20So%C4%8...
http://en.wikipedia.org/wiki/Trnovo_ob_So%C4%8Di
the Soca-valley is very wonderful and wild - a national-park-area!
http://www.soulboater.com/de/rivers/guide/section/50/
http://www.slovenia.info/?kolesarjenje=924&lng=3
http://www.google.at/#hl=de&q=Soca-valley&oq=Soca-va...
Drežnica: http://maps.google.at/maps?hl=de&q=Dreznica%205222%2C%20...