Robertson, J. 1859. Notices of two Bills introduced into the last Parliament of Scotland, the one for the Registration of Births, Baptisms, Marriages, and Burials; the other for the establishment of a system of Free Trade. Proceedings of the Society of Antiquaries of Scotland. 2, (Nov. 1859), 313–317. DOI:https://doi.org/10.9750/PSAS.002.313.317.