There are two different series with the same name, which is causing confusion. The series is "The Books of Samuel", with two volumes authored by I. G. Matthews, and two completely unrelated volumes authored by Cyril J. Barber.
Could you rename one of both of these series? Thanks.
PS — I also noticed that the author of Volume V of A Commentary, Critical, Experimental, and Practical, on the Old and New Testaments: Commentary is wrong. It's down as "Fausset, A.R.", whereas it should be "Fausset, A. R." (with the additional space).