Where in parliamentary papers is the (oft-quoted) evidence relating to child labour in Scottish mines?

The evidence is contained in the First Report of the Commissioners on Children’s Employment (Mines) and appendices, 1842. Vol. XV, 269p. (Sessional no. 380), Vol XVI, 886p. (Sessional no. 381), and Vol. XVII, 937p. (Sessional no. 382).