I found some 8 inch floppies with distribution kits for MU-BASIC V2 and RT-11 V03B. I imaged those and put them here http://www.datormuseum.se/documentation-software/rx01-and-rx02-floppy-disks if anyone is interested in playing with MU-BASIC. There are both RAW disk images and to be used in SimH and like and also DMK/IMD files.
The system that floppies came with is this little ( http://www.datormuseum.se/computers/digital-equipment-corporation/pdp1103-l) system once used at Scania in Södertälje.
