Which of the following is NOT a way to categorize Postal Service literature?

The correct response identifies that "Posters" are not a conventional category of Postal Service literature in the same way that handbooks, manuals, and guidelines are.

Handbooks provide detailed instructions and information about specific processes within the Postal Service, such as operational procedures and employee responsibilities. They are comprehensive and serve as essential references for employees.

Similarly, manuals also function as detailed reference documents but might focus more on technical aspects related to specific equipment or job functions within the Postal Service. They support employees in executing tasks accurately and efficiently by providing step-by-step instructions.

Guidelines are advisory documents that outline best practices or recommended procedures. They help in maintaining consistency and quality within the organization but are typically less prescriptive than handbooks and manuals.

Posters, while they may convey messages or promote information about the Postal Service, do not fit into the same structured categories as the other three options. They are often used for visual communication rather than serving as formal documentation or comprehensive instructional literature. This distinction helps clarify that while posters may be related to Postal Service literature, they do not serve the same purpose in terms of providing in-depth guidance or procedural instructions for employees.