I received the following document on May 12th, 2011 via e-mail from the Statearchive in Rseszow (Archiwum Państwowe w Rzeszowie).
This document is an extract from the registry of engaged Jews with an entry for Kalech-Stieber from Brozozów:

Transcription:
Wyciąg z matryk narzeczonych izraelitów
1885-1937
[table “8” not found /]

Translation:
Extract from the registry of engaged Jews
1885-1937
[table “10” not found /]

Further details on these records: Brzozow PSA B1885-1907 Marriages/Lwow Wojewodztwa / Rzeszow Province (records in Fond 16 in Sanok Archive) (see www.jri-poland.org)