Here is a list of commentaries that can be borrowed at archive.org. Commentaries that are most likely to be useful for expository preaching are marked with an asterisk (*). Commentaries that make use of historical criticism are marked “Critical.” Commentaries that are evangelical and generally avoid historical criticism are marked “Evangelical.”
Genesis
The Interpreter’s Bible, Volume 1: General Articles; Genesis, Exodus (1951) (Critical)
*The Message of Genesis 12-50 : from Abraham to Joseph (The Bible Speaks Today) by Baldwin, Joyce G. (1986) (Evangelical)
*Genesis (Interpretation Commentary) by Brueggemann, Walter (1982) (Critical)
A Commentary on the book of Genesis. Part 1, From Adam to Noah : Genesis 1-6,8 by Cassuto, Umberto (1961) A Commentary on the Book of Genesis. Part 2, From Noah to Abraham ; Genesis VI 9 -XI 32 with an appendix: from a fragment of part III by Cassuto, Umberto (1964) (Jewish) (Technical) (Genesis 1-11 only)
Genesis, with an introduction to narrative literature (The Forms of the Old Testament Literature, vol. 1) by Coats, George W. (1983) (Critical)
Genesis 1-11 (The Cambridge Bible Commentary) by Davidson, Robert (1973) (Critical) (Genesis 1-11)
*Genesis : an introduction and commentary (Tyndale Old Testament Commentaries) by Kidner, Derek (1977) (Evangelical)
Exposition of Genesis by Leupold, H. C. (Herbert Carl) (1942) (Evangelical)
Genesis (Old Testament Message, vol. 2) by Maher, Michael (1982) (Catholic) (Critical)
Genesis, Exodus, Leviticus, Numbers (Proclamation Commentaries) by McCurley, Foster R. (1979) (Critical)
Genesis (The Anchor Bible) by Speiser, E. A. (1964) (Critical) (Technical)
Genesis : a commentary (The Old Testament Library) by Rad, Gerhard von (1963) (Critical)
Genesis (Collegeville Bible Commentary) by Viviano, Pauline A. (1985) (Catholic) (Critical)
Exodus
The Interpreter’s Bible, Volume 1: General Articles; Genesis, Exodus (1951) (Critical)
Exodus, Leviticus Numbers : with excursuses on feasts, ritual and typology (Old Testament Message) by Burns, Rita J. (1983) (Catholic) (Critical)
*The Book of Exodus (The Old Testament Library) by Childs, Brevard S. (1974) (Critical) (Technical)
Exodus (The Cambridge Bible Commentary) by Clements, R. E. (Robert Ernest) (1972) (Critical)
Exodus (The Communicator’s Commentary) by Dunham, Maxie D. (1987) (Evangelical)
Exodus (Daily Study Bible) by Ellison, H. L. (Henry Leopold) (1982) (Critical)
*Exodus (Interpretation Commentary) by Fretheim, Terrance E. (1991) (Critical)
Commentary on Exodus (New Century Bible) by Hyatt, J. Philip (James Philip) (1971) (Critical)
The Book of Exodus (The Layman’s Bible Commentary) by Napier, B. Davie (1978) (Critical)
Leviticus
The Interpreter’s Bible, Volume 2: Leviticus, Numbers, Deuteronomy, Joshua, Judges, Ruth, Samuel (1951) (Critical)
Exodus, Leviticus Numbers : with excursuses on feasts, ritual and typology (Old Testament Message) by Burns, Rita J. (1983) (Catholic) (Critical)
Leviticus, an introduction and commentary (Tyndale Old Testament Commentaries) by Harrison, R. K. (Roland Kenneth) (1980) (Evangelical)
*Leviticus (Daily Study Bible) by Knight, George A. F. (1981) (Critical)
The Book of Leviticus : the Book of Numbers (The Layman’s Bible Commentary) by Mays, James Luther (1963) (Critical)
*Leviticus 1-16 : a new translation with introduction and commentary (The Anchor Bible) by Milgrom, Jacob (1991) Leviticus 17-22 : a new translation with introduction and commentary (The Anchor Bible) by Milgrom, Jacob (2000) (Critical) (Technical)
Leviticus : a commentary (The Old Testament Library) by Noth, Martin (1965) (Critical)
Leviticus (The Collegeville Bible Commentary) by Turner, Wayne A. (1985) (Catholic) (Critical)
*The Book of Leviticus (The New International Commentary on the Old Testament) by Wenham, Gordon J. (1979) (Evangelical)
Numbers
The Interpreter’s Bible, Volume 2: Leviticus, Numbers, Deuteronomy, Joshua, Judges, Ruth, Samuel (1951) (Critical)
*The Book of Numbers (The New International Commentary on the Old Testament) by Ashley, Timothy R. (1993) (Evangelical)
Exodus, Leviticus Numbers : with excursuses on feasts, ritual and typology (Old Testament Message) by Burns, Rita J. (1983) (Catholic) (Critical)
*Numbers 21-36 : a new translation with introduction and commentary (The Anchor Bible) by Levine, Baruch A. (2000) (Critical) (Technical)
Numbers (Collegeville Bible Commentary) by Mainelli, Helen Kenik (1985) (Catholic) (Critical)
Numbers (Daily Study Bible) by Riggans, Walter (1983) (Critical)
Numbers (The Cambridge Bible Commentary) by Sturdy, John (1976) (Critical)
Deuteronomy
The Interpreter’s Bible, Volume 2: Leviticus, Numbers, Deuteronomy, Joshua, Judges, Ruth, Samuel (1951) (Critical)
Deuteronomy, Jeremiah (Proclamation Commentaries) by Achtemeier, Elizabeth (1978) (Critical)
The Book of Deuteronomy ; the Book of Joshua (The Layman’s Bible Commentary) by Blair, Edward Payson (1964) (Critical)
*The Book of Deuteronomy (The New International Commentary on the Old Testament) by Craigie, Peter C. (1976) (Evangelical)
Deuteronomy (Collegeville Bible Commentary) by Hoppe, Leslie J. (1985) (Catholic) (Critical)
*Deuteronomy (Daily Study Bible) by Payne, David F. (David Frank) (1985) (Critical)
Deuteronomy (The Cambridge Bible Commentary) by Phillips, Anthony (1973) (Critical)
Deuteronomy : a commentary (The Old Testament Library) by Rad, Gerhard von (1966) (Critical)
Deuteronomy (JPS Torah Commentary) by Tigay, Jeffrey H. (1996) (Critical)
*Deuteronomy 1-11 : a new translation with introduction and commentary by Weinfeld, Moshe (1971) (Critical) (Technical)