Profile of the County of Clackmannan from the summit of the Woodhill of Alva one of the Ochill Mountains southward to the River Forth ... /
Bald, Robert,1776-1861.
Maingy, R.A.
cartographic

1849.
Continuation of title: ... the line being nearly at right angles to the general bearing of the strata comprehending a space of six miles 63 yards, also, section of the strata and great slips in so faras they have been ascertained which comprehends the main coalfield of Clackmannan Shire anno 1846. Chief survey commenced anno 1809 and continued to 1849.
"This horizontal section with the accompanying perpendicular section of the coal formation of Clackmannanshire; also the essay regarding them presented to James Johnstone of Alva Esquire by his obedient and much obliged servant Rob. Bald mining engineer 12th March anno 1849."
Pencil annotations  dated 1935.
"Drawn by R.A. Maingy, mining & civil engineer".
Signed by Robet Bald.
Johnstone, James, of Alva.
Coal
Geological cross sections