Heaven Holds All to Me is listed in at least 11 hymnals cited as being published before 1923. The earliest in the list, Calvary Hymns is listed with a 1915 publication date. None of the hymnals include page scans for verification. A copy of Calvary Hymns at the Internet Archive shows a copyright date of 1925 instead of 1915 (although it's instance of the song mentions no date).
My goal is to hopefully verify whether or not "Heaven Holds All to Me" is public domain or not.