-A-

        AAR - American Association of Railroads

        AB - Additions and Betterments notes

        ABB - Akron-Barberton Belt Railroad Company

        ABA - Air Brake Association

        ACY - Akron, Canton and Youngstown Railroad Company also AC&Y

        AFE - Authorization (or Authority) for Expenditure

        AGW/A&GW - Atlantic and Great Western Railroad Company

        ALCO - American Locomotive Company, later simply Alco

        AR - Annual Report

        ARA - American Railway Association (predecessor to AAR)

        ARL - accounting revisions ledger(s)

        AVP - Assistant Vice President

-B-

        BB - Buildings and Bridges

        BCK - Buffalo Creek Railroad Company

        BFN - building field notes*

        BH - Bath and Hammondsport Railroad Company also B&H

        BLE - Bessemer and Lake Erie Railroad

        BLW - Baldwin Locomotive Works

        BM - Boston and Maine Railroad Company also B&M

        BMWE - Brotherhood of Maintenance of Way Employees

        BN - Burlington Northern Railroad Company

        BO - Baltimore and Ohio Railroad Company also B&O

        BOD/B. of D. - Board of Directors

        BRC - Belt Railway Company of Chicago

        BrFN - bridge field notes*

        BRT - Brotherhood of Railroad Trainmen

        BRTC - Brotherhood of Railroad Trainmen Sub-collection

        BV - bound ledger book

        BVL - bound valuation ledger book

-C-

        CBQ - Chicago, Burlington and Quincy Railroad Company also CB&Q

        CE - Chicago and Erie Railroad Company also C&E

        CNJ - Central Railroad Company of New Jersey

        CO - Chesapeake and Ohio Railroad Company also C&O

        COFC - Container on Flatcar

        CPD - Cleveland Plain Dealer Newspaper

        CR - Consolidated Rail Corporation (Conrail)

        CRP - Central Railroad of Pennsylvania (CNJ subsidiary)

        CRR of NJ - Central Railroad Company of New Jersey

        CTC - Centralized Track Control

        CWI - Chicago and Western Indiana Railroad Company also C&WI

-D-

        DDN - dispatcher's daily notes

        DH - Delaware and Hudson Railroad Company also D&H

        DLW - Delaware, Lackawanna and Western Railroad Company also DL&W

-E-

        EB - east bound

        EC - excellent condition

        EL - Erie Lackawanna Railroad/Railway Company

        ELHS - Erie Lackawanna Historical Society

        EMC - Electro-Motive Corporation

        EMD - Electro-Motive Division of General Motors

        ER - Erie Railroad

        ETT - Employee timetable

-F-

        FC - fair condition

        FF - file folder, standard

        FFe - file folder, legal

        FFT - Freight Timetable/Schedule

        FM - Fairbanks, Morse and Company

        FN - field notes

        FRA - Federal Railway Administration

        FS - flat storage/flat stored

-G-

        GC - good condition

        GE - General Electric Corporation

        G.O. - general order

        GW - Genesee and Wyoming Railroad Company also G&W

-H-

        HBTM - Huntington and Broad Top Mountain Railroad Company also H&BTM

        HF - Hoboken Ferry Company

        HS - Hoboken Shore Railroad Company also Hoboken Manufacturer's

        HT - Harlem Transfer Company

-I-

        I/C - interchange

        ICC - Interstate Commerce Commission

        ICS - International Correspondence Schools, Scranton, PA

        IR - Ingersoll-Rand Corporation

-L-

        LB - loose bound

        LHR - Lehigh and Hudson River Railway Company also L&HR

        LNE - Lehigh and New England Railroad Company also L&NE

        LS - Lehigh and Susquehanna Railroad Company also L&S

        LV - Lehigh Valley Railroad Company

-M-

        McF - microfilm roll

        MFC - Maurice Frederick Coffman

        MFCC - M. F. Coffman Collection

        MHMR - Mount Hope Mineral Railroad Company (CNJ subsidiary)

        MOW - Maintenance-of-Way

        MP - mile post

        MYC - multi-year coverage

-N-

        NB - Northhampton and Bath Railway Company also N&B

        NBX - not boxed

        NEOUCOM - Northeastern Ohio University Colleges of Medicine, Rootstown, OH
                             Site of UAA remote storage facility

        NIAJ - Niagara Junction Railway Company

        NJDOT - New Jersey Department of Transportation

        NJNY - New Jersey and New York Railroad Company also NY&NJ

        NJPUC - New Jersey Public Utilities Commission

        NKP - Nickel Plate Road (New York, Chicago & St. Louis Railroad)

        No. - number

        NRLC - National Railway Labor Conference

        NRNJ - Northern Railroad Company of New Jersey

        NW - Norfolk and Western Railway Company also N&W

        NYABC - New York Air Brake Company

        NYGL - New York and Greenwood Lake Railway Company also NY&GL

        NYC - New York Central Railroad Company and System

        NYE - New York and Erie Railroad Company (Erie predecessor) also NY&E

        NYLB - New York and Long Branch Railroad Company (joint PRR - CNJ subsidiary)

        NYLEW - New York, Lake Erie and Western Railroad Company (Erie predecessor)

        NYI - no year indicated

        NYNHH - New York, New Haven and Hartford Railway Company also NYNH&H

        NYOW - New York, Ontario and Western Railway Company also NYO&W

        NYPANO - New York, Pennsylvania and Ohio Railroad Company, also just as
                          NYPANO Railroad Company

        NYPSC - New York State Public Services Commission

        NYSW - New York, Susquehanna and Western Railroad Company also NYS&W

-O-

        ORC - Order of Railroad Conductors

-P-

        pc - poor condition

        PC - Penn Central Railroad Company

        PLE - Pittsburgh and Lake Erie Railroad Company also P&LE

        PMS - Perry Monroe Shoemaker

        PMSC - Perry Monroe Shoemaker Collection

        PRR - Pennsylvania Railroad Company

        PTT - Public timetable

-R-

        RDG - Reading Railroad Company

        REA - Railway Express Agency Corporation

        RE&TA - Real Estate and Tax Agent

        RE&TD - Real Estate and Tax Department

        RI - Chicago, Rock Island and Pacific Railroad Company also CRI&P

        RFN - roadway field notes*

        RLHS - Railway Locomotive and Historical Society

        rm - railroad mark

        RR - Railroad

        RRRR - Raritan River Railroad Company

        ROW - right-of-way

        Rwy - railway

-S-

        SFB - signal(s) field book

-T-

        TDS - train dispatcher sheets

        TFN - track field notes*

        TOFC - trailer on flatcar

        TP - temporary placement

        TT - timetable, public

        T/T - telephone and telegraph

        TWS - tax work sheets

-U-

        UAA - University of Akron Archives in Akron, Ohio

        USRA - United States Railroad Administration (1917 - 1920) and United States Railway
                     Association (1970s and 1980s)

        UTU - United Transportation Union (successor to BRT)

-V-

        VE - Valuation engineer/Office of the Valuation Engineer

        VFN - valuation field notes.

        Vol. - volume

        VS - valuation section

-W-

        WAB - Wabash Railway Company         

        WABCO - Westinghouse Air Brake Company

        WB - west bound

        WBE - Wilkes-Barre and Eastern Railroad Company (NYSW subsidiary) also WB&E

        WLE - Wheeling and Lake Erie Railway Company (later NKP, later NW) also W&LE

        WN - Wharton and Northern Railroad Company (CNJ subsidiary) also W&N

        WM - Western Maryland Railway Company