Shane,
There has been an exhibition at the London Science Museum for a few months now. They have quite a lot on display with a mix of White Star Line property and personal items. There are pictures, salvaged parts of the ship, crockery (as found on the sea bed), wash basins, taps, snuff boxes, bowler hats, suits, shoes ................ it was endless.
They recreated the ship, its cabins, and finally the fateful night, moving from room to room, ending with a recreation of the iceburg (which really was a wall of ice). It was excellently done.
I don't know who actually owns all the artifacts now, but it must be either the UK or US states as they certainly weren't the personal effects of surviving relatives.
It doesn't show much, but if you want a quick squizz, the website is
www.sciencemuseum.org.uk (which also indicates it is all government owned).
Hope i've given you a little bit more to chew on.
Regards,
Andrea