There is a particularly obsessed, MAD-for-vintage-clothes population out there (yes, count me in) that just dies to find these kind of garments going through the thrift stores to be tried on and damaged, or just not appreciated (What! This PEARL set out here for...?!?)
Look on Etsy.com under for vintage women's and you'll get a pretty good guess for market value. There are some labels and fabric makers that are extremely sought after. Vera scarves are very collectable, so look through those pockets, so too are hankies. Don't overlook any accessories, "junk" jewelry, shoes or bags that might have gone with the dresses. Look for trade marks on rinestone pins - Eisenberg Ice is supposed to skyrocket in value, it's all getting snapped up now (
www.collectorsindex.com/eisenberg.htm) Polyester prints from the 70's are big, and your wool coat with silk lining is the holy grail. Anything in silk. Labels are fabulous, and tags are a dream come true. Even items worn beyond use are collected for their design details. Buttons are another big area. The only thing in a wardrobe that isn't particularly sought after are pants, but you can't touch a pair of 50's capris for love or money. Any patterned fabric is wanted by someone. Collectors of 50's modernism are looking for everything. Got swimsuits? There's another specialty market.
You'll get the highest prices from a sophisticated market, urban, Chicago, San Francisco and New York. Dealers on Etsy are always looking for more stuff. You'll be ahead of the game if you can get digital pics into the discussion of terms. Always name them by labels first. Maybe you can find a fashionista to look them over to help sort by decade, maybe put the "outfits" back together. A collection from a single owner is another added value. There's someone out there who will be all over you for this stuff like white on rice.