collection shipped overseas

Hi I need to ship a collection of >100 vinyl records overseas.
Would you still keep records off the jackets?

The jackets won't give you any protection. I'd put each record between sheets of foam core.
Depending on there value.. Sending air freight is the way to go if the value is high.
If air is too expensive, then you need a lot more care to pack them. Including making the package waterproof.

As for packing yes take the LPs out of the covers. I would surround the LPs with solid foam.
Remeber the package will need to be opened for customs. So make that easy for them, and able to reseal it easy.
If you make it near impossible to open without destroying the box (es) then you will have a mess when they arrive with a few bits of tape and torn cardboard holding what used to be your records..
Pack each record in a separate box that can be found on the Uline site. Best way of shipping. In any event, your venture will be expensive, maybe as much as $5.00 each.
'I would surround the LPs with solid foam.'

Elizabeth, I'm assuming that your referring to standard foam or standard packaging foam with which I have to respectfully disagree. Foam Core is light weight, rigid and with exception to the corners, relatively damage proof in packaging situations. A sheet of foam core can be bought cheaply at art supply stores and cut down into squares with a straight edge and X-acto knife or razor knife. Foam core is uniform in thickness, typically 1/16 inch.
I would also suggest using a roll of cloth tape to bind the two pieces of foam core (1 piece of tape on each end) at the bottom while leaving the top open for easy inspection by customs. I'd send them in three boxes while wrapping the entire contents in a solid sheet of plastic with the opening at the top.

All of these suggestions in heavy cardboard boxes will work like a charm but I'd still ask UPS if it would be best to double box them.
Sorry I forgot to say, line the inside bottom with bubble wrap.