Two more versions of Apple DOS, both still called DOS 3.3 but with some bug fixes and better support for the new Apple IIe model, were released in early and mid-1983.
A search for "DOS 3.3 system master" on
archive.org turns up a lot of different images, many with obvious modifications from the original, such as additional programs. Perhaps they also have less obvious modifications.
I'm looking for images of the original Apple DOS 3.3 System Master diskettes as distributed by Apple, with details about exactly which version each one is, and ideally with some effort made to confirm the provenance of the image. Where might I find such images?