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In the most recent edition of Jefferson’s Manual, discussion on impeachment is found at section 53. The main text directs to English precedents and provides superscript notes to practices in the House of Representatives. References are provided to English sources and to the precedents and proceedings of the House of Representatives. Earlier editions can be found in print and online.

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Chapter 27 provides a synopsis of impeachment procedures, primarily in the House but also in the Senate. References compilations of precedents and congressional legislation and publications. A good, brief source.

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Rules of procedure and practice for impeachment trials in the Senate are in sections 170-95. Consult the index for other listings. More recent editions can be found in the online edition.

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Discussion at pages 865-79. Reprints Senate rules for impeachment trials and Standing Rule IV, para. 1(d), which requires the keeping of a separate journal of proceedings when conducting impeachment trials. Also provides discussion of the rules of procedure with concrete examples and references to published proceedings and the journals.

1986 ed. available from GovInfo
1974 ed. available from HathiTrust External
Provides an in-depth discussion of Senate impeachment procedures from commencement in the Senate to conclusion of the trial. References are to Senate Rules, the Senate Journal, and published proceedings. This publication is a revised edition of a similar volume published in 1974.

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Chapter 14, volume 3 from the 1977 edition concerns impeachment. Chapter 15 in volume 4 discusses congressional investigations of the executive branch. Each chapter begins with a subject index. Note that a new series began being issued in 2017, but the chapters on impeachments and investigations into the executive branch are not yet available.

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Contains extracts from Hinds’ and Cannon’s compilations of precedents on impeachment. Very useful concerning procedures in the House and includes some coverage of procedures in the Senate. Not indexed but provides access through table of contents by broad subject matter and by defendant.

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Provides an analysis of the following issues: (1) procedures at trial in the Senate, (2) effect of the end of a Congress and start of a new Congress on a pending impeachment proceeding and on a Senate trial, (3) judicial review of impeachment proceedings, and (4) rules of evidence for Senate impeachment trials.

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Contains a variety of materials, including the 1957 Legislative Reference Service report on impeachment and references from Hinds’ and Cannon’s compilations of precedents on impeachment, as well as materials concerning the impeachment of three federal judges.

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Materials on impeachment begin in volume 6 at chapter 193 and continue through chapter 202. Includes proceedings for the trials of Archbald and Louderback and proceedings that did not result in an impeachment trial for the years 1908 through 1932.

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Chapter 17 provides a historical analysis of the major impeachment actions up through 1913. Dated but useful for researching obscure matters.

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Material on impeachment begins in volume 3 at chapter 63 and continues through chapter 79. Includes general discussion of the nature of impeachment and proceedings for each trial up through that of Judge Charles Swayne. Much of this material has been republished in later sources, but users may still want to consult the original. Also, chapter 79 covers impeachment proceedings that did not result in a trial.