Lock, Walter. Prefatory Note by the General Editor. The Book of the Prophet Isaiah with Introduction and Notes. London: Methuen & Co., 1911. includes:
The series will be less elementary than the Cambridge Bible for Schools, less critical than the International Critical Commentary, less didactic than the Expositor’s Bible; and it is hoped that it may be of use both to theological students and to the clergy, as well as to the growing number of educated laymen and laywomen who wish to read the Bible intelligently and reverently.
But I don't find the name of the commentary series? Anyone know?