It's a companion pic you can find in "Rainbow Chasers" on page 124. The opposite page shows the trip ticket for the search which was dated Oct. 29th, 1970.
Dell:
DESCO... great gear: easy to take care of, cheap (well it was at one time), simple, easily maintained and rugged. The KMB-8 could not match it for servicability in 30 feet or less.