Marie Bertrand Stock Illustration
French illustrator based in Paris provides a stock of digital images and illustrations in searchable updated database.
http://idez.net/illustration

Bob Staake
Humorous illustrations, cartoons and digital art for purchase.
http://www.bobstaake.com

Monkey Boy Graphix
Black and white clip art illustrations of sports mascots, in vector EPS format. Individual images or collections available for purchase.
http://www.monkeyboygraphix.com

The Bridgeman Art Library
Fine art images for publication. Site requires registration.
http://www.bridgeman.co.uk/

Jeff Koegel Fine Art and Commercial Stock Illustration.
Full color stock illustrations priced according to usage.
http://www.jeffkoegel.com/

Artservant Christian Pictures
Christian oriented illustrations which express evangelical themes.
http://www.artservant.com

Stocko
Searchable index of illustrations, with online purchase available.
http://stocko.cc/

Stock Illustration by Andy Attiliis
Stock illustrations and photographs that can be purchased for use as needed.
http://www.ideasiteforbusiness.com/andy/sss.htm

Laertis Art Studios
Conceptual illustrations and stock work, in natural media. The resource is organized into field of use.
http://www.laertisart.com

Illustration Works
Stock illustration index searchable by category, concept or by illustrator's name.
http://www.illustrationworks.com/

Stephanie Carter Illustration
Traditional realism and computer generated images. Stock illustrations available.
http://stephaniecarter.com/

At Home New Media Illustration
Specializing in vector illustrations of aviation, emergency vehicles and other subject areas.
http://users.swing.be/christian.toumpsin/

Jason Schneider Illustration
Contemporary illustrations in a variety of categories, including business, entertainment, finance, issues and travel.
http://www.jasonschneider.com/

Steven Salerno
Whimsically stylized and colorful stock illustrations in digital media, searchable with keywords and themed categories.
http://www.stevensalerno.com/

Stock Illustration by Risto Klint
Stylized stock illustrations created in vector formats. The pictures are sorted in categories and are available under rights protected licenses.
http://www.ristoklint.com/

IllustrationOnLine
Stock illustrations supplied by numerous artists. Many different media and stylizes are represented, and are searchable by subject matter.
http://www.illustrationonline.com/

stockart.com
Monochrome and color stock art searchable by keyword, category or illustrator's name.
http://www.stockart.com/

Hadley Licensing
An art image source primarily focused on licensing painterly works. A wide variety of styles and artists are represented.
http://www.hadleylicensing.com/

ImageZoo Media
Rights-protected and royalty free stock illustration source, searchable with keywords. Also includes royalty free collections for order.
http://www.imagezoo.com

Paulo Buchinho Illustration
Royalty free stylized vector illustrations available on CDs. The images may also be individually orderable.
http://www.paulobuchinho.com

Oliver Weiss Stock Archive
Illustrations in various styles, including line art, black and white, as well as color. Sorted by category uses, and searchable with keywords.
http://www.oweiss.com/stock/

Christie's Images
Classical and contemporary Fine and Decorative art images, and illustrations, available for licensing from one of the world's leading auction houses.
http://www.christiesimages.com

Ecliptic
Specialized in IT business and computing themes. The royalty-free stock illustrations are grouped by style, such as: painting, collage, vector and 3D renderings.
http://www.ecliptic.ch/stock/

News Art
Search and download editorial artwork covering a range of topical events. Art in wide variety of media cratered by different artists.
http://www.newsart.com/

Art by Andy Nortnik
Features retro, vintage, and cartoon style clip art and t-shirts.
http://www.andynortnik.com/

CoolIllustrations.com
Collection of illustrations for editorial, technology, t-shirt and web, created using adobe illustrator and photoshop.
http://www.coolillustrations.com/

Vectorstock
Royalty-free vector stock images, illustrations, graphics and icons. Multiple artists.
http://www.vectorstock.com

IBD Licensing
Image licensing agency with a library of rights managed images for all occasions and products. Illustration, art, photography, and bespoke images for license.
http://www.ibd-licensing.co.uk

StockIllustrations
Stock illustration index searchable by artist, subject, style, and color.
http://www.stockillustrations.com/

Art Booster
A collection of cartoons and spot illustrations searchable by keyword or category.
http://www.artbooster.com/

Toonbook2
Stock vector illustrations by André Verheye. Sorted by category.
http://www.toonbook2.com

Pixrar
Sells royalty-free stock illustrations and photographs. Accepts illustrations from artists for further sale.
http://www.pixrar.com