You might check out the ClassicCmp (http://www.classiccmp.org/ http://www.classiccmp.org/) or Vintage Computer Foundation (http://vcfed.org/wp/ http://vcfed.org

You might check out the ClassicCmp (http://www.classiccmp.org/ http://www.classiccmp.org/) or Vintage Computer Foundation (http://vcfed.org/wp/ http://vcfed.org/wp/) mailing lists. There are folks on there with extensive expertise and equipment for recovering and archiving data.