Anasazi - the FDS as taught by the WT has been giving out spiritual food. That is not in doubt
The teaching of the WT is that they were appointed by Jesus over all his "belongings" 3 1/2 years after he Arrived in Kingdom Power. The paralel with 3 1/2 years after his baptism and clearing out the temple is cited as proof. This is the time he "suddenly came to his temple" in 1918 - 1919, inspected all those claiming to be Christians, and found that only the Bible Students were teaching the truth from God's word - thus feeding his people "food at the proper time".
The date 1919 is therefore very dependent on 1914.
It is well worth researching the literature to see how this is presented.
HB