Mining the Logs: phrase "putting one's life on the line"

This link contains the following thread from the H-1960s listserv:

Editor's Subject: Fwd: query on phrase "putting one's life on the line" 
Author's Subject: Fwd: query on phrase "putting one's life on the line" 
Date Written: Wed, 25 Jul 2012 22:54:00 -0400 
Date Posted: Thu, 25 Jul 2012 22:54:00 -0400

H-Net is celebrating 25 years of service by mining the logs of its 180+ networks for topical discussions, teaching and research resources, and milestones in H-Net's history from a few email listservs to an online academic commons. Happy birthday, H-Net!  Please support our efforts to keep this archive free, secure and accessible!