It wouldn't hurt to run your inventory through the APRL to see if they need a missing or replacement issue here or there.
Being a long day's drive from Bellefonte, I collect philatelic literature including runs of these houses too. Not all of them have online archives. The challenge in selling them (even the name-sales) is the cost of shipping, which typically exceeds the retail value. To get much return, they need to be local pick-up.
As an example, I have 2 and a half paper cases containing duplicates of about 100 Robert A Siegel sales between numbers 880-1126. They are printed on dense paper and they are HEAVY! The shipping is more than these are worth. I would be happy to have $100 for them, but couldn't ship them.

They need to go away, but I won't dump them at a recycler. I will probably take them to the free literature table at a show instead.