Veterans groups and local governments typically place small markers, which come in various shapes and are made of various materials, at the graves of veterans to honor their military service.
Brozowski said there are no individual names on the markers to indicate whose graves they were taken from, although some have references to Allentown of a certain war. Some of the markers appear to commemorate service going back to the Civil War, he said. The markers themselves don't appear to have been dumped in the river long ago because there was no sign of corrosion or anything growing on them.
You can read more in the Morning Call web site at http://www.mcall.com/news/breaking/mc-veteran-grave-markers-20100704,0,5321171.story