52 Weeks of Genealogy - Immigrant Home Town Record Search

Time is flying by...I think I've already lost a couple weeks somewhere!

Today I thought I would combine this week's GeneaBloggers theme :
Week 3 - Assess yourself! You’re great at researching everyone else’s history, but how much of your own have you recorded?
with Gena's Genealogy :  52 Weeks of Genealogy Sources
Week 1 theme:  Searching the Family History Library Catalog by Location

In my own family history research I had stalled on my immigrant g-grandparents, but recently I narrowed down possible towns of origin for them.
By searching Ellis Island passenger lists for the siblings of these g-grandparents I was able to find town names cited as 'last residence'.
Surname Kolbusz:  Szufnarowa, Galicia, Poland
&
Surname Kollain:  Slavonia, Brod, Austria

What I have failed to do so far is follow up on what records might be available for these towns.

Using the FHL location search:
 I found nothing for the town Szufnarowa which was disappointing, but there were several listing for Austria, Galicia, that I might want to delve into further.

I had better luck for my second location search finding:
Place: Croatia, Slavonski Brod
Topics: Croatia, Slavonski Brod - Church records
             Croatia, Slavonski Brod - Jewish records

Clicking on the Church records link I got the following:

Clicking on the first record listed I get a more detailed description of what it contains:

Title:   Kirchenbuch, 1748-1918

Authors:   Österreich. Armee. Garnison Brood (Slavonien)

Baptisms, marriages and deaths of military personnel in Brood, Slavonien, Austria; also called Bród, Pozsega, Hungary; now Slavonski Brod, Croatia. Includes military hospital. For Indexes to the names of regimental captains and garrison place names see films no. 1442862-1442866. Text in German with some Croatian.