Modern Athens (1829) is an amazing history of the city and includes information on Heriots and other tourist hotspots.  Some of the prints in the gallery below will be recognisable as little has changed in some areas of Edinburgh. 

Modern Improvements, Antiquities, and Picturesque Scenery, of the Scottish Metropolis and Its Environs. London: Published by Jones & Temple of the Muses, Finsbury Square., 1829. Print.

While the main gate changed to Lauriston place in 1827, you can still see the Heriot Bridge gate in this print.

Regarding the school and its statutes, “Not contented with providing, at great length, and with the most laborious minuteness, for the due qualification of all the higher and more important officers of the establishment, he (Balcanquhall) lays down with much anxiety the moral, intellectual, religious, and physical duties of the cook, the caterer, the barber and the washerwoman.”

Displayed in a Series of Views: Or Edinburgh in the Nineteenth Century: Exhibiting the Whole of the New Buildings.