Plan of the Longford Misk colliery, and part of the lands of Snodgrass 1820. Outlines of Misk taken from an old plan made in 1796.
Robertson, James,Engineer.
Archibald Kenneth & Son.
W. Peck & Son.
Edinburgh :  W. Peck & Son, 
[1841]
"Signed Archibald Kenneth & Son, Surveyors, Irvine, 1820" "Edinr. ... 1841. This is reduced plan of Messrs. Kenneth's original plan ... James Robertson".
[These printed]
Plan "no.1: underground" - see RHP 46915 for provenance.