Have you read the Cosmic Times? It is a great project out of NASA's Goddard Spaceflight Center that basically provides curriculum materials for middle school & high school teachers on our our understanding of cosmology over the last 90 years or so.
They have produced six newspaper front pages from six different years (1919, 1929, 1955, 1965, 1993 & 2006) that talk about "current" events. At the masthead each front page (available as a cool poster) shows off what was then thought to be the age and size of the universe.
For the Palomar connection, aside from photo above, the stories cover the research of people like Edwin Hubble, Fritz Zwicky, Walter Baade, Maarten Schmidt and others. Astronomy teachers and amateur astronomers should both enjoy having a look at the materials posted on their website.
Why wasn't this around when I was teaching astronomy?