Drinker, S. H. (1960). Pennsylvania's Honoured Mistress: Unanswered questions in the life of Hannah Callowhill Penn. Paper read before the Welcome Society, January, 1959, and before the Old York Road Historical Society in Chapel of Grace Presbyterian Church, Jenkintown, on March 18, 1959. [n.p.

Drinker, Sophie Hutchinson. Pennsylvania's Honoured Mistress: Unanswered Questions in the Life of Hannah Callowhill Penn. Paper Read Before the Welcome Society, January, 1959, and Before the Old York Road Historical Society in Chapel of Grace Presbyterian Church, Jenkintown, On March 18, 1959. [n.p, 1960.

Drinker, Sophie Hutchinson. Pennsylvania's Honoured Mistress: Unanswered Questions in the Life of Hannah Callowhill Penn. Paper Read Before the Welcome Society, January, 1959, and Before the Old York Road Historical Society in Chapel of Grace Presbyterian Church, Jenkintown, On March 18, 1959. [n.p, 1960.