Below are the abbreviations used in my reports, both in the 'html' and 'WinWord' versions.
| AEG | Allgemeine Elektricitäts-Gesellschaft, Berlin, Germany. |
| Alco | American Locomotive Co., USA |
| BLW | Baldwin Loco Works, Philadelphia, Pennsylvania, USA |
| BBA | Betrieb für Bergbauausrüstungen, Aue, DDR. (Sub. of Wismut) |
| BBC | Brown, Boveri & Cie., Baden, Switzerland. |
| BLW | Baldwin Locomotive Works, Philadelphia, USA. |
| Borsig | A.Borsig, Berlin, Germany. (1841-1931) Borsig Lokomotiv-Werke GmbH, Berlin, Germany. (1931-1944) |
| BP | Beyer, Peacock & Co.Ltd., Gorton Foundry, Manchester, UK. |
| Breda | Breda Elettromeccanica & Locomotive SpA, Milan, Italy. |
| Brjansk | Brjansk Loco Works, Brjansk, USSR. |
| Breuer | Breuer-Werke GmbH, Frankfurt/Main, Germany. |
| CCCP | unknown builder, USSR |
| Chaplin | Alexander Chaplin & Co.Ltd., Cranstonhill Works, Glasgow, Scotland |
| Chrz | Fabryka Lokomotywim "Feliksa Dzierzynskiego", Chrzanów, Poland. |
| CKD | Ceskomoravská-Kolben-Danek A Sp., Prague, Czechoslovakia. |
| Cock | Société pour l’Exploitation des Établissements John Cockerill, Seraing, Belgium |
| Davenport | Davenport Locomotive Works, Davenport, USA. |
| Diema | Diepholzer Maschinenfabrik Fritz Schöttler GmbH, Diepholz, Germany. |
| Essl | Maschinenfabrik Esslingen, Esslingen am Neckar, Germany. |
| Faur | Werk ‘23 August’ (FAUR), Bucaresti, Romania. |
| Flor | Wiener Lokomotivfabrik AG., Wien-Floridsdorf, Austria. |
| Frichs | A/S Frichs, Århus, Denmark. |
| GE | General Electric Co., USA |
| Gmd | Carl Kaelble und Gmeinder GmbH & Co., Germany. (f. Gmeinder & Co.GmbH) |
| Hart | Sächsische Maschinenfabrik vorm. Richard Hartmann AG, Chemnitz, Germany. |
| Hatlapa | Uetersener Maschinenfabrik, Uetersen, Germany. |
| HE | Hunslet Engine Co., Hunslet, Leeds, England. |
| Hen | Thyssen Henschel, Kassel, Germany. (f. Henschel & Sohn GmbH) |
| JW | Jenbacher Werke AG., Jenbach, Austria |
| Kaluga | Kaluga Loco Works, USSR. |
| Karl | Maschinenbau-Gesellschaft Karlsruhe, Karlsruhe, Germany. |
| Kol | "W.W.Kujbyschew" Machinery Works, Kolomna, USSR. |
| Krauss L | Lokomotivfabrik Krauss & Co., Linz am Donau, Austria. |
| Krauss M | Lokomotivfabrik Krauss & Co., München, Germany. |
| Krenau | Oberschlesische Lokomotivwerke AG
Kattowitz, Werk Krenau, Poland. (Chrzanów while under German control - 1939-1944) |
| LEW | VEB Lokomotivbau-Elektrotechnische Werke "Hans Beimler", Hennigsdorf, DDR. |
| LHB | Linke-Hofmann-Busch, Salzgitter, Germany. |
| Ljudin | Ljudinova Works, USSR. |
| LKM | VEB Lokomotivbau Karl Marx, Potsdam-Babelsberg, DDR. |
| LTS | Loco Works "October Revolution", Lugansk (Voroshilograd), Ukraine. |
| OK | Orenstein & Koppel, Berlin-Drewitz, Germany.
(1898-1938) Maschinenbau und Bahnbedarf AG, Berlin, Germany. (1938-1945) Orenstein-Koppel und Lübecker Maschinenbau AG, Dortmund-Dorstfeld, Germany. (1950- ) |
| MaK | Maschinenbau-AG Kiel, Kiel, Germany. (1948-1959) Maschinenbau Kiel GmbH, Kiel, Germany. (1959- ) |
| Mavag | Magyar Állami Vas-, Acél- és Gépgyárak (MAVAG), Budapest, Hungary. |
| MB Trac | Mercedes-Benz AG., Stuttgart, Germany (road/rail tractors) |
| Mein | Reichbahn-Ausbesserungswerk "Helmut Scholz", Meiningen, DDR. |
| Meyer | R.Meyer AG., Muhlheim/Ruhr |
| Minilok | allrad-Rangiertechnik GmbH, Heiligenhaus, Germany. (Road/rail machines) |
| MLW | Montreal Locomotive Works, Montreal, Canada. |
| Moyse | Locotracteurs Gaston Moyse, La Courneuve, Seine St.Denis, France. |
| MTM | La Maquinista Terrestre y Marítima SA, Barcelona, Spain. |
| Nohab | Nydquist & Holm AB, Trollhattan, Sweden |
| OM | Officine Meccaniche e Navali, Milan & Naples, Italy. |
| Pittsburgh | Pittsburgh Locomotive and Car Works, Pittsburgh, USA. |
| PM | Pedershåb Maskinfabrik A/S, Brønderslev, Denmark. |
| Porter | H.K.Porter Locomotive Works, Pittsburgh, USA. |
| Reghin | IUPS, Traktorwerk, Reghin, Romania. |
| Resita | Uzinele de Fier si Domeniile din Resita
Societate Anonima Resita, Romania. (later: Combinatul Metalurgic) |
| RH | Ruston & Hornsby Ltd., Lincoln, England. |
| Rogers | Rogers Locomotive Works, Paterson, USA. |
| RS | Robert Stephenson & Co.Ltd., Newcastle-upon-Tyne, England. |
| Schalke | Gewerkschaft Schalker Eisenhütte, Gelsenkirchen, Germany. |
| Schichau | F.Schichau Maschinen- und Lokomotivfabrik, Elbing, Germany. |
| Schneider | Schneider & Cie., Le Creusot, France. |
| Schöma | Christoph Schöttler Maschinenfabrik GmbH, Diepholz, Germany. |
| Schw | Berliner Maschinenbau-Actien-Gesellschaft (vormals L.Schwartzkopff), Berlin, Germany. |
| Sigl | Actien-Gesellschaft der Lokomotiv-Fabrik vormals G.Sigl, Wiener Neustadt, Austria. |
| Škoda | Škoda Werk, Plzen, Czechoslovakia. |
| SLM | Schweizerische Lokomotiv- und Maschinenfabrik, Winterthur, Switzerland. |
| SMZ | Strojárske a Metalurgié Závody, Dubnica, Czechoslavakia. |
| Sormovo | State Factory Red-Sormowo, Somorowo, USSR. |
| Spoor | NV Spoorijzer, Delft, Netherlands. (built Deutz locos under licence) |
| SSW | Siemens-Schuckert-Werke, Berlin, Germany. |
| Stadler | Ernst Stadler AG., Fahrzeugbau, Freienbach/Zürich/Bussnang, Switzerland. |
| TSM | Turcianske Strojárne Národný Podnik Martin, Czechoslavakia |
| U23A | Werk ‘23 August’ (FAUR), Bucaresti, Romania. |
| Unilok | Hugo Aeckerle & Co., Hamburg, Germany (road/rail machines) |
| Unimog | Mercedes-Benz, Stuttgart, Germany. (Road/rail unit, based of the MB Unimog tractor) |
| Unio | UNIO-Werke, Satu-Mare, Romania. |
| VIW | Vulcan Iron Works, Wilkes-Barre, Pennsylvania, USA |
| Vodkivsk | Wotkinsk Works, USSR (?) |
| Vollert | Hermann Vollert GmbH & Co.KG, Weinsberg, Germany. Un-manned, radio-controlled "Robot" locos. |
| Zagro | Zagro Bahn- und Baumaschinen GmbH., Bad Rappenau-Grombach, Germany. |
| ZLP | Závody V.I.Lenina, Plzen, Czechoslovakia. |
| ZV | Závody K.J.Voršilova, Dubnica, Czechoslovakia. |
| CFF | Câile Ferate Forestiere (State Forest Railways), Romania. |
| CFR | Câile Ferate Romanie (Romanian State Railways), Romania. |
| DB | Deutsche Bundesbahn (1948- ) later Deutsche Bahn AG. |
| DR | Deutsche Reichsbahn (1923- ) |
| KPEV | (Prussian State Railways). |
| b | builders number found on the boiler. |
| Der | Derelict |
| Dsm | Dismantled |
| f. | formerly |
| IS | Loco in steam at the time of the visit. |
| m | builders number found on the motion. |
| oou | Loco out of use at the time of visit. |
| orig. | originally |
| Pvd | preserved |
| Rep | Loco under repair at the time of the visit. |
| Scr | loco scrapped. |
| s/s | loco scrapped or sold. |