My condolences to you and your family. Hopefully you have plenty of furniture and other things crafted by your husband to remember him by. I can tell you that for many of us there is a real passion to this and probably his heart and soul went into what he created.
You might try North Carolina Woodworker via this link
. I am sure that there are woodworkers in Raleigh who can help.
Though pictures would be the easiest way for people to help you, accurate descriptions would also work. For example, Delta Unisaw model 123-456, Jet Dust Collector model ABC, etc.
If you have the luxury to take your time and really research your items, you should get a pretty good for them. Google is a great resource for research. For example, Google 'Delta Unisaw 123-456' and you are likely to get reviews, original selling price and maybe even used selling price. eBay is also good at figuring out going sales prices. Follow an items auction through to the end and you will have a market price.
I suggest that you create a little table in Word, Excel or on paper listing the manufacturer, the model number, the original selling price (if you can get that), any special features or extra equipment and the price range you have researched or were lead to believe it is worth.
Also, do not think that that little rusty tool in the corner is worthless. There can be great value in things that size wise or condition you would think are worth just about nothing.
Lastly, depending on the species, the lumber can be worth a quite a lot as well.