DRAM HISTORY

I'm trying to identify and find some early if not first specific production DRAM chips for a project at the Computer History Museum. I've poked quite a bit about on the web and found lots of good generic information but not much about specific pioneering devices after the Mostek 16 KiB circa 1976. In particular I'm interested in the first and/or early vendors of the following parts 1) 256 Kib DRAM circa 1983 probably from Japanese vendors 2) 16 Mib DRAM circ 1989 IC Master unknown vendors 3) 1 GiB DRAM circa 2000, probably Micron. I'm looking for a shipment date, photo, chip size and price information. However, just a vendor name and part number would be a great starting place. If any of u have or know of some one who has old IC Master's of the appropriate era that would be a great place to get vendor, part number and other information. Any help would be appreciated. Tom