Are you getting any responses? I have a relative pittance of IFFs, but just last night I started up my Amiga (after being in the garage for over a year; I know, I shouldn't have done that). If I can read the disks, I will get some together.
On this page you can find some of my IFFs that I converted to GIFs for posting. You should be able to tell the IFFs from the scanned artwork.
(BTW - some of my IFFs [not the above] can get kind of 'blue,' if you know what I mean - want those too?)