They print a picture of Russell and talk about 1931 and 1935 but they do not point out that the first date given for the end of "the high calling" was 1881.
"It was also reasoned that the end of God’s special favor to natural Israel down to 36 C.E. might point to 1881 as the time when the special opportunity to become part of spiritual Israel would close." (Proclaimers-Book, p. 632)
Matt. 25 and the parallelism of the Jewish and Gospel ages, seem to teach that the wise of the virgins "who are alive and remain" must all come in, to a knowledge of the bridegroom's presence, by the fall of 1881, when the door--opportunity to become a member of the bride--will close." (ZWT, R180)