Russia With Ukraine Overprint

I am hoping someone can direct me to a catalog for these stamps. I have many others that I'd like to inventory but have no clue where to start. This group is from 1993.

Cinderellas ( bogus overprint on stamps from USSR),not postage stamps.
Dnipropetrovsk never was a legal postal authority.

They are real stamps left over from the Soviet Government and sold way under face to a enterprising person who overprinted them with both real places and fansty places thru out the Soviet area . There is maybe 20 or 30 regions names printed on these old Soviet stamps .....they have no interest but to Cinderella collectors .

Here is a list for Russian Federation.
https://www.pwmo.org/Illegals/illeg...deration.htm

These prints were made on quarter blocks of definitive stamps of the USSR of two denominations 1 k. (1988) and 4 k. (1976). The largest overprinted denomination was printed on a double quarter block. The series reproduces images of prehistoric animals. There are the following:

20 (hr) - ? / ?
50 (hr) - ? / ?
100 (hr) - Archaeopteryx
100 (hr) - Triceratops
120 (hr) - Diplodocus
150 (hr) - Hipparion
220 (hr) - Brontosaurus
200 (hr) - Triceratops
250 (hr) - Iguanodon
250 (hr) - Mammoth
500 (hr) - Stegosaurus, Triceratops, Brontosaurus, Iguanodon

In the link you offered, what would Dnipropetrovsk match in the list please.

Oops, I see Ukraine.