Miss Leavenworth.
That name rings a bell.
5.56mm
That name rings a bell.
I thought the same, so I did a simple Bing search, which turned up nothing. From the index I learned that Annie Leavenworth appears eleven times in Strong's entries between October 1857 and November 1859, in connection either with a social gathering or a musical event. One of the former also names an "old" Leavenworth, presumably her father. I don't know who he is, either.
She must be a pretty close friend if she is joining the family at their vacation resort in Massachusetts.
"Tiffany's shop in Broadway, where I had engaged a second story window. We inspected the grand National Wide-Awake torchlight procession. It was brilliant and successful. It was more than two hours in passing. . ."
The Wide-Awakes were Republican activists who marched to raise interest and support for Republican candidates. This one is barely a month before Lincoln's election as President.