LF: SH-U1 slide mount holder for Minolta Dimage III

[pbridges]

I wanted to transfer my slides to digital, and bought a used Minolta Dimage III scanner on E-bay.
It works very well but only came with a film strip tray. Most of my pictures are cardboard mount
slides, and it is going to be a pain to take the film out of the mount to do the scanning.

I need a SH-U1 slide mount holder (buy or borrow) if any one can help.