The Hewlett Foundation’s primary references on usage and style are the current AP Stylebook and Webster’s New World College Dictionary. This style sheet provides guidance on the most common stylistic and spelling questions, as well as foundation exceptions to AP Style and Webster’s. An asterisk (*) denotes an exception. The purpose of this guide is to ensure consistency, clarity, and alignment with our values in our written materials, whether they are for the Hewlett Foundation’s board of directors or for external audiences.

The style sheet is organized in alphabetical order. Use the letters below to jump to any specific letter or use search to find a specific term.