Typed list of dredging contractors and excavators dated January 30, 1988, hand written note on list reads, "Dean Greimel here is a list of local contractors that do dredging. Shall I contact them? Dale."
Handwritten list by Dale Wolicki (Lawrence Institute of Technology) with the names of dredging contractors and excavators addressed to Dean Karl Griemel, dated October 30, 1988.