Hi sueinboulder.
Welcome to our Mattress Forum. 
You mentioned you need a wedge pillow or topper. Is that correct, or are you looking for both items?
Could you provide a little more context as to the intended purpose (reflux, support due to an injury, etc)? If you’re interested, there is some very good information about choosing a topper in post #2 here and the topper guidelines and other posts it links to.
Looking forward to your reply.
NikkiTMU