Ralph McLean and Humming Earth have made a huge contribution to eighteenth-century Scottish studies by giving us a new edition of John Home's Douglas (long out of print) along with facsimiles of three dozen contemporary broadsides, pamphlets, proclamations, and advertisements relating to the play. These primary sources may well generate a resurgence of interest in Douglas, in Home and his work, in the Scottish stage, in cultural identity as a national and religious issue, in the rise of the two ecclesiastical parties within the Church of Scotland, and in the supporting roles played by prominent figures such as David Hume, Adam Ferguson, and John Witherspoon. " -- Richard B. Sher, Distinguished Professor of History at the New Jersey College of Technology