MacLehose worked in London 1832–8, then returned to Glasgow, briefly as a partner of Robert Nelson. He started the Western Book Club in 1841. His shop, a meeting place for debate, published religious tracts. He expanded his printing, becoming bookseller then printer for the University of Glasgow, and did much work for Macmillan. Two of his sons married Alexander Macmillan's daughters.
From The Oxford Companion to the Book in Oxford Reference.