From the Levy Collection:

Title: The Pretty Girl Milking Her Cow. Irish Ballad. ("The Valley Lay Smiling Before Me"). [Also includes "The Song of O'Ruark, Prince of Breffni," to the same air].
Composer, Lyricist, Arranger: na
Publication: New York: John J. Daly, 419 Grand St., 1860.
Form of Composition: strophic
Instrumentation: piano and voice
First Line: 'Twas on a bright mornin' in summer I first heard his voice spakin' low
Performer: As Sung by Miss Agnes Robertson and Mrs. John Wood in Bourcicalt's Drama of the "Colleen Bawn."
Engraver, Lithographer, Artist: Stackpole, Sc.
Plate Number: 99
Subject: Courtship & love
Subject: Country life
Subject: Campaigns & battles
Subject: Deceit
Subject: War
Subject: Emotion--pain
Call No.: Box: 053 Item: 047

From American Memory:

The dead beat. Air: Pretty maid milking her cow. H. De Marsan, Publlisher, No. 60 Chatham Street, N. Y. [n. d.]