What's That Bug? does not endorse extermination

Subject:  old pic of caterpillar
Geographic location of the bug:  Maryland, usa
Date: 07/11/2019
Time: 10:04 PM EDT
Your letter to the bugman:  While looking through old pics I had taken long ago, found a pic I took maybe in late 70s, early 80s. Never found out what it was. Any ideas? Back then I was afraid to investigate it, I was young, Now I am older and so curious
How you want your letter signed:  jackie

Hickory Horned Devil

Dear Jackie,
This spectacular caterpillar is a harmless Hickory Horned Devil.

You can disregard my question, found from a friend it is hickory horned devil caterpillar. I had searched everywhere for answers. Figures, as there were 2 hickory trees nearby at the time of the picture. Thanks anyway. Did not want to waste your time!!!!

What's That Bug? does not endorse extermination
Location: Maryland