What this site offers - except for poetry, letters and the German study "Kaleidoskope der Mehrdeutigkeit" - can be reached from here:
Chronology of Trakl's life
Links on Trakl
There are many linkages in all this and Trakl's literature;
The intention of this project is to collect materials on Trakl that build a mosaic of his life, art and times for consideration and study by both the casual and serious Trakl admirer.