The sender gives on the back of the card in one of the last lines still the reference to Shavuot - " It was high time"

Shavout 5681 was on June 12, 1921 - three days before the scribe wrote the card.

In the Jewish address book Frankfurt a. M. 1935 the following entries can be found

List of names - Ettlinger Emil, embroidery factory, Neckarstraße 5   -  Ettlinger Rudolf, handicrafts factory, Neckarstraße 13

Industry -  Enterprises - Ettlinger Rudolf, Handarbeitenfabrik, Neckarstraße 13 - (Page 171)

In the Jewish address book of the city of Frankfurt 1935 ( The 1935 Jewish Frankfurt Addressbook ) is the following entry  -  Carlebach Max, Kfm., Glauburgstr. ~7.