My mother was out for a walk and found a person's dog tag laying on the ground. It has their first and last name, social, blood type, and religion on it. She really wants to get it back to them because she thinks they might be sentimental about it. She tried taking it to the post office but the guy said there was nothing they could do. Somebody recommended the VFW or an army recruiting office. Does anyone have any experience with this? Thanks!

Those are good ideas. Also you could try phone books for your area looking for the last name, tell the people who you are looking for and see if you have any success? My dad has had his for almost 50 years so you are right that people like to keep them!