There are plenty of sites on the internet that you should peruse before selling the collection. Try Records Collectors Guild and www.moremusic.co.uk to get some insights what you might get for them. Used record stores will obviously pay a little less than what they might be worth, but that's an easy way to offload a large collection. There's a book and record warehouse here in the DC area that takes in records in bulk but they don't pay very much. Unless the records are special or in pristine condition, I can pick them up from anywhere $1 to $3. If you were close-by I would've loved to see what treasures your father had in his collection. All the best. Usama