1558 - 1603 Eliz 1
1603 - 1625 Jas 1
1625 - 1649 Chas 1
A considerable number of works from this period are now available in full text electronically via various databases.
The easiest way is to search for known titles/authors in SOLO. In the results, click on any green "Online resource" link. Then click on "Open resource in new window" link. Remember, if you have an Oxford Single Sign On, you can get access to these wherever you are by logging into SOLO with your username and password.
If you don't have a specific work/author in mind, searching the databases themselves (see links below) via eg keyword, or place+date of publication may be useful.
Some basic subject searches to try in SOLO
Law -- Great Britain -- History -- 16th century
Law -- England -- History -- 16th century
Law -- Great Britain -- History -- 17th century
Law -- England -- History -- 17th century;
Justice, Administration of -- England -- History
Law and literature -- History -- 16th century
Law in literature
Although still not how we now understand law reports should be, three lawyers of repute had volumes of reports published in their own lifetime:
Plowden’s Commentaries (ER 75KB 1550-1580), Coke’s Reports ER 76-77KB 1572-1616) and Bulstrode’s Reports (ER 80-81KB 1610-1625).
A lot of other collections of case notes were printed too - with title page attributions of distinguished "authors."
Reports from the lost notebooks of Sir James
Working with the surviving court archives