To go around the Facebook page, try this link:

https://www.prrths.org/content.aspx?page_id=86&club_id=171391&item_id=112154

Note that only the last four issues are available now for free download.  All previous issues are available to be purchased on CD.  This is a change from the prior protocol, but I don't know when that change was made.

Cheers,
George Irwin