Based on the author's own statement:

In the short amount of time I've spent collecting Mosin Nagants I have learned a lot from some excellent resources on the internet and off, as well as from observations of my own collection. With a subject as varied as Mosin Nagants there will always be more to learn and I don't consider myself an expert by any means.
Without seeing any particular references stated, I would have to consider it single sourced reporting and therefore unreliable, not necessarily incorrect data, simply unconfirmed.

Resources I would like to see that support the assertion that all finishes were Shellac would be a collection of period documents, or chemical lab testing of the finish composition of know refurb and original rifles. However I do not expect either of those to materialize so for the time being I take it all with a grain of salt.
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