This book describes the many calculation aids and devices that were available in 1908. The chapter on calculators is only 20 pages and has few illustrations and pictures. More than half the chapter deals with the history of calculators, with only a few pages with brief descriptions of contemparary machines. There are some ads at the back of the book, including ones for the Millionaire, and the Burkhardt Arithmometer.

The first 95 pages are about calculators, while the rest of the book concerns various techniques and analog devices for approximately solving equations and other calculations. It has a fair number of pictures of mechanisms and machines. The text mostly discusses the various mechanisms and their inventors, but hardly ever mentions any particular brand or model except in a historical context.
This book was published as part of the "Encyclopédie Scientifique", a collection of books on a wide variety of subjects including photography, plant scents, astronomy, finances, biological growth, oil fields, cancer, steam engines, heredity, suspension bridges, and many others.

This book has a thorough overview of the various types of calculator mechanism and the main calculators of each type that were available in 1915. It has a moderate number of good illustrations and pictures. There were later updated editions in 1924 and 1932.

This book contains an extensive description of most of the office machines that were available in 1921. The first section is about typewriters, the second about calculators, then bookkeeping machines, duplicators, clocks, safes, and other machines. I have scanned the section on calculators and this is available at the links above.

This is two books bound in a single cover. The first book is all about the admin and organisation necessary to run a business office. The second book describes all the office machinery that is available, including machines for coping, printing, filing, dictation, bookkeeping, etc. The section on calculators is only 16 pages, with one illustration on almost every page. is run book describes the many calculation aids and devices that were available in 1908. The chapter on calculators is only 20 pages and has few illustrations and pictures. More than half the chapter deals with the history of calculators, with only a few pages with brief descriptions of contemparary machines. There are some ads at the back of the book, including ones for the X×X, the Triumphator, and the Burkhardt Arithmometer.

This book is a dictionary of terms related to the office. This includes various brand names of office machines, such as calculators and adding machines. Unfortunately there are virtually no illustrations at all.

This book about bookkeeping machines has two parts. The first explains how bookkeeping machines are used in the running of a business (almost 80 pages), and then a catalogue of the various machines that were available. There were calculating typewriters (30 pages), full keyboard adding listing machines (15 pages), 10-key adding listing machines (20 pages), printing calculators (6 pages), printing registers (15 pages), and punchcard machines (10 pages). Each machine is pictured, and its capabilities listed.

This book lists the various machines and tools that were available for the office. It has many photos and illustrations. Its chapter on calculators includes some rare machines of the time such as the Stima 4 and the Dacometer 9. I have not found any copyright year, but other sources claim it was published in 1948.

This Russian book is intended for engineering students and contains pictures of many different calculation machines, with diagrams of some parts of their mechanisms. Amongst the calculators discussed are the Felix, the VK-2 (Facit clone), TIM with keyboard, KSM (Monroe KA clone), Rheinmetall SASL, Mercedes-Euklid, and Hamann Manus. The adding machines include the Burroughs class 5, Torpedo, Direct, DSM (Dalton clone), Monarch, Burroughs Portable, and Mauser-Addi. The rest of the book tackles various other machines such as those that create punchcards or sort and tabulate them.

The first 65 pages discuss mechanical calculators, which is followed by chapters on early electronic calculators/computers, graphing tools, planimeters, integration tools, and analog machines for differential equations.

The calculator section focuses on the various mechanisms and general uses of these machines. In particular, it discusses the history (Pascal, Leibnitz, Hahn, Thomas), adding machines (troncet, comptator, Burroughs, 10-key adding machines), pinwheel machines (Brunsviga, Walther, Facit), stepped drum machines (Rheinmetall, Archimedes, Curta), proportional rack (Mercedes Euklid), switching latch (Hamann), and direct multiplication (Millionaire).

This book provides a history of adding machines, with many pictures of machines from Europe and the USA. Note that it does not include calculators. At the end it has a time line.
There is no copyright year in the book, but other sources claim it was published in 1953. A scan can be found on archive.org.

This book extensively discusses most types of calculators, with many pictures of machines and their mechanisms. There is no copyright year in the book, but other sources claim it was published in 1953. Apparently A. Henneman is actually a pseudonym of Adolf G. Schranz, see above.

This is a Russian popular science book about calculating machines. It starts off with the Russian father of the calculator, Pafnuty Chebyshev. It includes descriptions of several types of mechanism, from pinwheel to Mercedes-Euklid, and then leads on to electronic computers.

This book discusses administrative processes and the many tools to expedite them. There is a short section on calculators which explains and illustrates various types of calculator without explicitly mentioning specific brands. On one set of pages there are examples of different print reproduction methods glued in. I have not found any copyright year, but other sources claim it was published in 1959.

This book describes in detail the components and workings of electronic calculators and computers. Unfortunately it does not describe the history, so makes no mention of mechanical calculation.

This book ostensibly covers the history of the typewriter and calculator industry in Germany, but it is basically only about Olympia and Brunsviga. It contains many photos from the Olympia production line.

In-depth description of the stepped reckoner that Gottfried Wilhelm Leibniz devised.

This is a broad history of the office, from the ancients to now. It only briefly mentions calculators, and notably has an illustration of Frank Baldwin's pinwheel calculator but wrongly describes it as an Addressograph machine.

This book discusses various office machine that were manufactured in Berlin. Each chapter is by a different author and tackles a different subject, ranging from typewriters, to calculators, to copiers.

This is the book that accompanied a calculator exhibition. The first part of the book gives a history of the calculator, and the second part lists the various exhibits that were shown.

This book has a history of calculators, with a heavy emphasis on the calculator manufacturing in Sömmerda, i.e. Rheinmetall.

This gorgeous book shows a large number of calculators, all beautifully photographed. The short descriptions include an indication of its rarity and value. Note however that these are very subjective, based on the author's opinion, and don't always match my own experience.

This book is a special publication for the magazines "Schreibmaschinen- und Bureau-Zeitung" and "Historische Bürowelt". It shows adverts for office machines through the ages. It mostly concentrates on typewriter ads, but there are a few calculators too.

This excellent book contains various detailed articles, each on a different brand of calculator. They are accompanied with many photographs and illustrations.

In September 1623 Wilhelm Schickard described a calculating machine in a letter to Kepler. Four hundred years later an exhibition on mechanical calculators was opened, describing the evolution of those machines. The exhibition was at the University of Antwerp for a little over a year. This book accompanies that exhibition, with photos of many of the exhibited machines and copious explanatory text. The exhibition website contains most of the same information.

Here are some photos of the exhibition.