I got ya, Agonus. This is from pages 577-578 of the Proclaimers book. I don't know where it can be found online but I have the CD ROM.
" After the release of the Society’s president, J. F. Rutherford, and his associates from prison, the Bible Students assembled at Cedar Point, Ohio, in 1919. They considered what God had permitted to occur during the preceding year and what his Word indicated that they should be doing during the days ahead. Announcement was made that a new magazine, TheGoldenAge, was to be published as an instrument to use in pointing people to God’s Kingdom as mankind’s only hope.
As it had done in the past, the Society arranged for a commercial firm to do the printing. But times had changed. There were labor difficulties in the printing industry and problems in the paper market. A more dependable arrangement was needed. The brothers prayed about the matter and watched for the Lord’s leadings.
First of all, where should they locate the Society’s offices? Should they move the headquarters back to Brooklyn? The Society’s board of directors considered the matter, and a committee was appointed to check into the situation.
Brother Rutherford instructed C. A. Wise, the Society’s vice president, to go to Brooklyn to see about reopening Bethel and renting premises where the Society could begin printing operations. Desirous of knowing what course God would bless, Brother Rutherford said: “Go and see whether it is the Lord’s will for us to return back to Brooklyn.”
“How will I determine as to whether it is the Lord’s will for us to go back or not?” asked Brother Wise.
“It was a failure to get coal supplies in 1918 that drove us from Brooklyn back to Pittsburgh,” Brother Rutherford replied. “Let’s make coal the test. You go and order some coal.”
“How many tons do you think I should order to make the test?”
“Well, make it a good test,” Brother Rutherford recommended. “Order 500 tons.”
That is exactly what Brother Wise did. And what was the outcome? When he applied to the authorities, he was granted a certificate to get 500 tons of coal—enough to care for their needs for a number of years! But where were they going to put it? Large sections of the basement of the Bethel Home were converted into coal storage.
The result of this test was taken as an unmistakable indication of God’s will. By the first of October 1919, they were once again beginning to carry on their activity from Brooklyn."