John Greenewald's "The Black Vault" and the Mutual UFO Network (MUFON) have done us all a great service by putting online the MUFON Archive:

The MUFON Archive is a joint effort between the MUTUAL UFO Network (MUFON) and The Black Vault. In March of 2008, the two parties agreed to enter a powerful relationship on the internet, and offer unprecedented access to MUFON's archives. This includes four decades worth of MUFON Journals, from the year 1967 to the end of 2007, along with other research papers, documents and investigation case files.

This archive offers an important look into the past, present and future of UFO research. Many of these documents and publications are found nowhere else online, anywhere in the world.

That's right, *four decades* of journals, from one of the oldest and most important organisations dedicated to the scientific research of the UFO phenomenon. Each available as a PDF download. Wonderful stuff! (h/t UFO Mystic)