The following articles have been added to the electronic articles page:
Redden, Lester. "Hebrews a Petrine Document." Bibliotheca sacra 68.272 (1911): 684-92.
Riley, I. Woodbridge. "The Letters of Junius and the Epistle to the Hebrews: A Comparative Study in Higher Criticism." Bibliotheca sacra 58 (1901): 607-31.