A couple of space history items:

* Space historian Roger Launius writes about early US space nuclear power projects, in particular those using RTGs, or radioisotope thermoelectric generators:  The Transit Program and the Origins of Nuclear Power Systems for Spaceflight- Roger Launius’s Blog.

* Anthony Young discussed his book, The Saturn V F-1 Engine: Powering Apollo into History, on a recent Space Show interview: Anthony Young, Sunday, 3-23-14 -Thespaceshow’s Blog