A card index to the vertical file might be made to minimize the difficulties of the classed arrangement.
For the purchase accounts with firms and individuals, a vertical file is used.
For these reasons, the vertical file is found more satisfactory.
Either a vertical file or a post binder may be used for this purpose.
A very satisfactory method of filing designs is to use a file constructed on the principle of the vertical file.
Without question, the most satisfactory method of filing is to use the vertical file, with a folder for each customer.
A better plan is to use a correspondence folder, such as is used in the vertical file, in which the papers can be kept flat.
The indexes are fastened in a vertical file drawer, yet are removable.
The more modern method is to file documents and legal papers in a vertical file, using document envelopes, as shown in Fig. 25.
Numerical indexing was the method first used with the vertical file, and still is extensively used.