Like the Slant top desk the main work surface is a hinged piece of wood which lifts up to a vertical position and is tilted to an angle of about 45 degrees or so towards the bulk of the desk in order to enclose secondary work surfaces such as small shelves, small drawers and nooks stacked in front of the user. Thus, like the Wooton desk, the Fall front desk and others with an hinged desktop, and unlike closable desks with an unmovable desktop like the Rolltop desk or the Cylinder desk all documents and various items must be removed from the work surface before closing up.
To those not used to it the secretary desk looks like a mutant made up of a mix between a commode-dresser, a Slant top desk and a book case. Many however are used to it since it is one of the most common antique desk forms and it has been endlessly reproduced and copied for home use in the last hundred years. Among home desk forms it is the tallest, biggest and heaviest of all, if we exclude wall units and modular desks which can be disassembled for moving, or some of the biggest of the armoire desks, which are usually delivered unassembled.
The correct or the most common correct term for the secretary desk described here, is the secretary and bookcase. Unfortunately there is no unanimity on this term, even among specialists. Also, the general public usually calls this kind of desk a secretary, or secretaire. In a taxonomic sense one could sometimes say that all desks which have the capacity to close off the working surface are secretaries, while all others are simply desks. Since establishing a dichotomic classification of desk types would appeal only to cataloguing librarians looking for intellectual exercices and a to few specialists in the field of artificial intelligence systems, we can drop this line right here.
When a secretary desk is cut in half, so to speak, to provide a secretary desk half as wide as usual on one side and a glassed door cabinet on the other, this big piece of furniture is called a side by side secretary. The term is also applied sometimes to very big pieces of furniture made up of three elements, one of them being a half wide secretary desk. Until recently there was a good example of a side by side secretary in the second floor office of the historic home of John Muir in Martinez, California, U.S.A.. The attic of this home also had a good example of a Portable desk.
On most antique secretaries and also on most reproductions the user has to pull out two small wooden planks called sliders in order to support the desktop, before actually turning the desktop from its closed, angled, position to its normal horizontal working position. However, in quite a few of the antique versions a system of internal gears and/or or levers connected both to the sliders and the hinged desktop automatically pushed the sliders out at the same time as the user pulled on the closed desktop to put it in its horizontal position. When the user closed it afterwards, the sliders would then retract automatically. In such a case the secretary is also known as a Mechanical desk like many other desk forms which have some sort of mechanism pushing out elements of the desk and then pulling them back in automatically.
A secretary desk is generally not used by a person with the title of secretary, since this kind of desk is an antique form which is now extremely rare in the modern office, where a secretary (frequently called an administrative assistant) normally works.
See also the list of desk forms and types.