This .zip file contains 4 .png files with transparent backgrounds.
There is an 8.5x11" version of the color image and of the black and white line and a small (approximately 1.5x3") version of each as well.
These images are all 300dpi ~ commercial print resolution ~ and so can be enlarged up to double their size without loss of quality ~ or reduced by any amount to fit your project.
This makes it possible to make anything from a high quality poster for your classroom wall to a small flash card!
I am working on making all of my president portraits color and black and white, working backwards...when I get to George Washington I will make them all available in my presidents bundle at a discount.