Standard RSR5 code repository

Hi I am trying to find a code repository of strictly standard RSR5 open source applications for use with testing an interpreter I am working on. Is there are such repository out there?

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googling...

First of all, I assume that by R5RS you mean a Scheme interpreter as described in "Revised^5 Report on Scheme."

Some googling immediately leads to

ftp://ccrma-ftp.stanford.edu/pub/Lisp/r5rstest.scm

which is a dead link, but the file s7test.scm is mentioned in the same context. It is contained in

ftp://ccrma-ftp.stanford.edu/pub/Lisp/s7.tar.gz

I'm by no means involved in Scheme interpreter testing, but on first sight, the 3.3MB s7test.scm looks pretty serious.