NICAP has a repository of thousands of report files from years back including military investigated BlueBook archive files. This link references NICAP reports of an intriguing and interesting nature. This page is updated when ever a case of interest is brought to our attention.

Clink on the case of interest below.

Six 10" Flying Discs Pursued By Car April 28, 1949 Homer Michigan 

Killeen Base, Camp Hood, Texas May 7, 1049

Silver objects dive with smoke trail, hover at 5-6 ft altitude, 50 ft away

U.S. Air Force couldn't explain this one
NICAP Cases of Interest