Finding a cheap library of maps with consistent style isn't always easy, especially if those maps have to work on the Web, in print and/or PowerPoint presentations.  Today Directions Magazine points us to such sets (usually priced for less than $50) that meets those criteria.  See "Trumpet Marketing Group, LLC Announces Collection of Royalty-Free United States Presentation Maps"

Says the company:

PresentationMall.com US State Maps are provided in a number of formats, including Adobe� Illustrator(.AI), Windows Meta File (WMF), JPG and GIF.  

Adobe Illustrator files (.ai) are layered, vector format files and are fully editable.   This means you can add your own elements to the maps change borders, separate counties, change colors, show or hide layers and more.  You can resize the images without losing quality. Additionally, county names are provided on a different layer, so they can be manipulated as needed.

The WMF files (.wmf) can be imported into popular applications such as Microsoft PowerPoint� and Office� and edited for presentations, reports, demonstrations and more!