cannonmn, i'm serious when it comes to history, and enjoy your research projects. I used to have to go to Virginia Tech to see the "O.R.", sure glad i found it on eHISTORY.com............ ya never know, there might be some ordnance request report, or orders on what to do with them old mortars. i'll pitch in and help look for any info. Sometime i'll have to tell you about the three batteries of buried cannons in Virginia at the last days of the war. I don't think that record is in the "O.R." but know where you can see it.