Holders of an Oxford SSO have 3 main online routes to articles published in US law journals, use links below:
The link below should help find US Open Access journal articles available to all
Access to WPs and preprints
If you are using Google scholar, make the most of it! Go into the Settings (the bars to the left of the logo)
1) Use Search results to adjust the BIbliography manager to suit your choice of reference management software.
2) Use Library links to find and select University of Oxford/Find it at Oxford. This should mean quicker access to the subscription sources available to holders of an Oxford SSO.
Holders of an Oxford SSO can access CILP, the Current Index to Legal Periodicals produced by the Gallagher Law Library (Washington University) via both HeinOnline & Westlaw.
As HeinOnline's (USA) Law Journal Library is so extensive, it using Scholarcheck is a useful tool within Hein.
An Index to Legal Periodical Literature (1803-1937)
|Ref Bibl General I35|
ILP : Index to Legal Periodicals (1908-1996)
|Ref Bibl General I56