Hello
I have studied the 30th Division quite a bit, especially its activities during the November 1944 Offensive in and around Mariadorf and the coal mine area Mariagrube. In fact, I am still seeking first hand accounts of the attack.
Unfortunately, I have just checked my file on the 105th and find that the most recent correspondence is dated 1983 and one exchange in 1993. From my own experience (my Dad was a member of the 978th Engineer Maintenance Company attached to the XIXth Corps at that time and has passed away) most of these men are most likely deceased.
Have you tried the 30th Infantry Division Association on-line? Be careful that it is the 'real' site; there IS a site for reenactors.
I wish I could be of more help. But if you would like to share information, let me know at: tpsnell@gmail.com