Fireworks Glasses.com - Holographic diffraction grating lenses for viewing fireworks displays, laser light shows, holiday and city lights and for the study of light and color. - http://www.fireworksglasses.com
American Paper Optics - A manufacturer of 3D and novelty glasses. - http://www.3-dglasses.net/
Rainbow Symphony Inc. - Manufacturers of 3D glasses including fireworks glasses, solar eclipse viewers, and diffraction grating films. - http://www.rainbowsymphony.com/
3D Glasses Direct - Manufacturer of 3D Glasses including fireworks glasses, solar eclipse viewers, and holographic diffraction grating films. - http://www.3dglasses.net/