Looking for knowledgable person to appraise swords/knives/bayonets/bla in Copan, Oklahoma For Sale

My father in law passed leaving behind assorted blades knives bayonets things of this nature. We would like to find someone who can tell us more about them dates,places value things of this nature. Any help would be appericated.Most appear foreign japan,germany,russia,switzerland etc 918 534 xxxx