Resize images into two different sizes

I have 130 images that need to be taken from the source size and copied into two other sizes. The first size needs to have a max width of 300px and the second needs to have a width of 100px. The height doesn't matter, constrain proportions needs to be used so the image doesn't get distorted. The delivery of this project will be that the source files will be converted and saved into the appropriate folder, one called display and the other called thumb. This project needs to be delivered by Friday noon central us time.