I'll echo the other comments and also say "good stuff". It is rare for folks to post an
inherited collection that is worth something. Heck I'd love to see a photo of a pile of 50 penny blacks. Remember there is "catalog" and "retail" value of these things. Unless there is something that is truly spectacular you won't get full catalog for it. Condition as others have said is key. Some scanning will be good for two reasons. Folks here are very good at details and if you want to sell/appraise you will need the best image possible. Get a scanner or a friend that has one. Scan the backs too.
From what I see you may want to get them appraised. What part of the US are you from? Folks here can offer advice on dealers too. There are still enough around that they would be interested in some of what you have here. You have to decide if you want an appraisal or to sell.