In writing up this post, it will be important to note that this was an independent foreign missionary society. Thus, when the PCUSA issued the Mandate of 1934, they were being hypocritical (perhaps too strong a word–they were at least going contrary to their own history), in that their in own history the PCUSA had twice utilized independent agencies, the other being the American Board of Commissioners for Foreign Missions (check to make sure that’s the correct name of the latter organization]

The centennial of the Western foreign missionary society, 1831-1931 [microform] – Presbyterian Church in the U.S.A. Presbytery of Pittsburgh. Committee on the centennial of the founding of theWestern foreign missionary society
“Bibliography … of Sadhu Sundar Singh”: p. 111-112; “Bibliography of the Western foreign missionary society“: p. 227-234