This work of Ruth Anne and Michael Grove, a husband and wife collaborative team from California, reminds me of fireworks. Unfortunately they've left the business, sold their fabulous equipment and moved on to other pursuits.
You can still see their work in the 1995 book entitled "Five Artists-Five Directions" and we are indebted to Ruth Anne and Michael for many of the ideas in vogue today. Their work is also in the permanent collection of the Cooper-Hewitt Museum.
Have a Happy Fourth!