This post is an appendix to How Dating the Dead Sea Scrolls Went Awry — #1.
Solomon Birnbaum’s palaeographic dating of the DSS to the mid 1st C BCE was published in the Bulletin of the American Schools of Oriental Research No. 115 (Oct., 1949), pp. 20-22, “The Date of the Cave Scrolls“.
The result of the comparison was then applied to the Covenant Scroll and the Habakkuk Commentary also from Cave 1: