If you read (and you should) the what's new section of this forum on a regular basis, then you have already seen the link to my friend Denis's site regarding his father a photographer for the 3rd Infantry Division. Please if you have some extra time, get a cup of java and sit down in front of his site (as opposed to sitting behind it?) and look through all these fantastic B&W photos.
http://www.dogfacesoldiers.org/
I have only made it a third of the way so far, but have already found a few pics of the 36th and 540th Combat Engineers. These will be up on the main site soon, but wanted to post them here for all to see. Of course I was thrilled when I stumbled upon them.
Thanks Denis for the taking the time to upload all of those. 
You must be very proud of your dad!
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The 540th Engineer Combat Group operated two heavy pontoon rafts and two infantry support rafts on the Rhine River on March 26, 1945 between Bobenheim and Worms while supervising the building of two bridges across the River.
Proud Daughter of Walter (Monday) Poniedzialek
540th Engineer Combat Regiment, 2833rd Bn, H&S Co, 4th Platoon
There's "No Bridge Too Far"