Need Help identifying late husbands Stereo components Infinity Beta speakers

I am very sorry to hear of your loss. The Infinity IRS Beta Speakers are very good and are worth a bit of money in good condition. However, they are large and expensive to ship. Where are you located? Maybe there is someone nearby who may be interested in the speakers. 

I'm sorry for your loss.  reubent is correct.  If in good condition the IRS Betas have closed sales on ebay in the $7-$12K range.  If you give a general idea of your location, we may be able to recommend a good used equipment dealer.  This site is good for high quality gear, typically better than ebay in terms of responsible members, as long as you check feedback.  Shipping the IRS Beta's would definitely be a challenge and if damaged, replacement parts are scarce.  Threshold made some good gear, depending on the model and condition, it could be worth $750-$2000.  If you post model #s on the electronics, we could also give a better idea.

One other thought.  I'm not sure if you consider this a labor of love or a something you need to do out of financial necessity or what, but if you want to reduce the stress/hassle level, you might reach out to The Music Room in Colorado.  They are probably the biggest dealer in used high end at the moment and have a good reputation on this site.  They offer fair prices and may even be able to help set up shipping for those IRS Betas.  One stop selling, perhaps.  Personally, I would stay away from Craig's List.  At least where I live, there are safety issues and likely would get lowball offers.  Anything that you cannot sell through high end channels, including this site, I would then put on ebay.  And be careful of scammers asking to pay with (phony) Western Union money orders, or asking to ship to a 3rd party, and the like.  If it feels funky, listen to your gut or post here and ask. 

Thank you all for your help, here is list of components.
beta speakers, I have the original boxes. Stored in heated insulated barn.
threshhold DAC 1/e digital processor
infinity IRS Servo  
BK M-200
ADCOM 5800
ADCOM 5802
Threshold T-2 preamp
Threshold DC power source e
threshold serial number 09411 this looks like the DC power source, but is bigger and heavier. 

Then there is is a plethora of remotes, I have a forte remote but I am not sure which component it belongs to. There are other components in the storage room too. 

I am weary of craigslist, as in my area it is mostly low end items.
we are in Michigan north of Detroit. 
I truly appreciate your  help. This is very hard to do. He only taught me how to use the home theater, I have no idea how to even turn on this system. As we only have one child still at home I am looking to downsize. 
Thank you all.

I would contact Saturday Audio in Chicago.  They definitely can move this gear and are really nice guys.  Call or email them with this list.  I'm sure they can sell it for more than you can.  It will be well worth paying someone to drive it to Chicago.