Source: Timeline
Feb. 8, 1919 Pacelli transmits to Gasparri a request by Jews in Frankfurt for Papal intervention against reported pogroms in Poland and Galicia.
English translation
Feb. 8, 1919 Pacelli to Gasparri:
Most Reverend Eminence,
The Bishop of Fulda charges me to transmit to the Holy See the here-enclosed Memorial sent to him by various Jewish persons and Societies of Frankfurt on Main, for the purpose of obtaining the good offices of the Holy Father, to bring an end to the cruelties that are said to have been committed up to now against the Hebrews in Poland and Galicia.
In fulfilling this desire of the aforesaid Bishop, I have the honor to bow humbly to kiss the Sacred Purple ...
Source: www.Pacelli-Edition.de, Document No. 2120.