From the Richmond Enquirer, 5/28/1862, p. 1, c. 5
MORE BALLOONS. – Some four or five balloons were seen, on yesterday, floating in the air over the Confederate and Federal lines. Two of them, we understand, were sent up from our army, for the purpose of trying the enemy's plan of playing bird's-eye bo-beep. The results, of course, were equally satisfactory to both parties.