I searched for Cheb (Eger) area traditional costumes (kroj) because of Amy's question in comments under the
blog post showing some pictures of these costumes from different regions of Bohemia. I have found quite interesting book published in 1845 and then again in 1877 about Cheb and its surroundings called Eger und das Egerland by Vinzenz Pröckl. There are some pictures of traditional costumes from this area.
Egerland (Chebsko) is located in western part of Bohemia. It was fully German area and it became part of Czech lands during the reign of Charles IV. in 1348.
The map above shows current Czech borders (in red). Light grey is original Egerland which was administered from the town Cheb and belonged to the Holy Roman Empire. Dark grey is that part of Egerland which was gived to Czech kings as a pledge in 1322.