Block system

Report of the Interstate commerce commission on block-signal systems and appliances for the automatic control of railway trains.

Under Public joint resolution no. 46, approved June 30, 1906.

Block signals and appliances for the automatic control of railway trains ...: Report. <To accompany H.J. Res. 153.>

United States. Congress. House. Committee on Interstate and Foreign Commerce, United States. 59th Cong., 1st sess., 1905-1906. House, James Robert Mann

Annual report[s, and Final report] of the Block Singal and Train Control Board to the Interstate Commerce Commission ...

United States. Interstate Commerce Commission, Mortimer E. Cooley, United States. Block Signal and Train Control Board

Standard Code of the American Railway Association: Train Rules Adopted April 14, 1887 ... and Block Signal Rules . .

American Railway Association

General regulations for working the absolute block telegraph on double lines of railway

Great Northern Railway (Great Britain)

Rules of the operating department: Effective November 30th, 1952

United States. National Mediation Board, Erie Railroad Company

Railway "block" signalling: the principles of train signalling and apparatus for ensuring safety

by James Pigg

Rukovodstvo ėlektromekhaniku i monteru avtoblokirovki.

[Sostavili I. M. Kutʹin, M. K. Golovkin i N. M. Stepanov. Pererabotali i dopolnili M. K. Golovkin i I. M. Kutʹin]. Utverzhdeno Glav. upr. signalizat͡sii i svi͡azi MPS.

American practice in block signaling: with descriptions and drawings of the different systems in use on railroads in the United States.

Modern electric block signaling, University of Nebraska, 1902, thesis

by E.F. Bliss.