Civil War envelope showing eagle, American flag, musical score and lyrics, with messages "Soldier's Letter," "Constitution," and "Army for the Union"

Addressed to Miss Mary Wilson, Industry, Baker Co., Pa. ; postmarked Washington, D.C., Oct. 19 ; bears 3 cent stamp.
Lyrics begin: "Our striped and starry banner bear, with eagle's eye defending..."
Printed on recto: "Copyright secured by James P. Herron."
Deposit; Tom Liljenquist; 2018; (D074)
Purchased from: Amberman Postal History, Clifton Park, New York, July 2018.
pp/liljmem