<?php if (function_exists('tclTaxonomyImage')) tclTaxonomyImage(NULL,'thumbnail'); ?> to display image <?php if (function_exists('tclTaxonomyThumbUrl')) echo tclTaxonomyThumbUrl(NULL,'thumbnail'); ?> to get URL

The WP Multiple Taxonomy Images Plugin allows you to add multiple images to a term. It supports category, tags and custom taxonomies.

An easy, customer/user friendly way to upload images and attach them to your content. Optionally sets the featured image. Sometimes you just want to upload a file to a post/page/custom post type/taxonomy/etc.. This plugin allows you to do that with a simple user friendly interface. No popups, no additional page loads, no extra work… just a simple upload button on you post/page editor. You can have as many uploaders per page as you like. It even creates shortcodes and widgets for your use so no coding required!

Add Custom Image To Your Category / Custom Taxonomy Field With Advanced Category and Custom Taxonomy Image Plugin.

A powerfull widget for displaying categories with image.

Add an image to a category or taxonomy. Display a category image using either a template tag or a shortcode.

Have featured and cover images for tags, categories and custom taxonomies