(.1)S/O Joe Grenfell and S/O Stewart Marshal (holding spraying hose) testing S.E.C Cherry pickers for fire fighting (.2) Testing S.E.C Cherry pickers for fire fighting use - S/O Joe Grenfell & S/O Stewart Marshal at top. 9 men standing on ground watching, 1 on back end of cherry picker truck. 2 black and white photos(.1) S/O Joe Grenfell S/O Stewart Marshal Testing S.E.C Cherry pickers for fire fighting 1985 (.2) Testing S.E.C Cherry pickers for fire fighting use 1985 S/O Joe Grenfell & S/O Stewart Marshal at top 1985, staff, j. grenfell, s.marshal