"OVERVIEW OF 1 SAMUEL"
The author of First and Second Samuel is anonymous, but Jewish talmudic tradition says that it was written by Samuel. Samuel may have written the first portion of the book, but his death recorded in First Samuel 25:1 makes it clear that he did not write all of First and Second Samuel. Samuel did write a book (10:25), and written records were available. As the head of a company of prophets (see 10:5; 19:20), Samuel would be a logical candidate for biblical authorship.
First Chronicles 29:29 refers to “the Book of Samuel the Seer,” “the Book of Nathan the Prophet,” and “the Book of Gad the Seer.” All three men evidently contributed to these two books; and it is very possible that a single compiler, perhaps a member of the prophetic school, used these chronicles to put together the Book of Samuel. This is also suggested by the unity of plan and purpose and by the smooth transitions between sections.