The Pocket Testament League is an organization founded by R.A. Torrey's song leader, Charles Alexander and Alexander's wife, Helen Cadbury in 1908. The League, originally a childhood dream of Cadbury's, distributes free pocket-sized New Testament Bibles through street evangelism and is still in existence today. It began unofficially in 1893, when Cadbury was a teenager. She and her friends sewed pockets onto their dresses so they could carry little New Testaments with them and would be prepared to share the Gospel with whomever they met. They also pledged as part of their membership in the League, to read their Bibles every day, pray, and be ready for opportunities to share the Gospel. Alexander and ministry partner J. Wilbur Chapman helped Cadbury organize and enlarge her league in 1908 in Philadelphia. The League has grown since then and enjoyed powerful ministries during both the World Wars, the Cold War, and the Vietnam War.
When the Alexanders lead meetings at Biola Hall, they took on many new members for the League. Every person who attended these meetings was given a New Testament at the expense of the Alexanders and was made to promise to carry it with them everywhere and to read at least one chapter of the Bible every day. The League's rally-song which everyone would sing at the end of every Biola Hall meeting while holding up their New Testaments went as follows:
Take it wherever you go.
Take it wherever you go.
God's message of love,
Sent down from above,
Oh, take it wherever you go.
For more information see the official website http://www.pocketpower.org/about/history.php.