Thank you all so very much for the warm welcome and the links! I have found more than enough designs!
1. set of four construction trucks
Welcome! There are some free designs at SewForum of a tow truck, backhoe, cement truck, & dump truck under Free Embroidery designs. There are also some road signs. http://www.sewforum.com/
Here are some other free designs.
http://www.filipkoza.cz/k03_vehic...
perhaps you can use these too?
and welcome to cute!
Free
Hello Linda... most digitizing companies offer their designs in pes/dst format. Have you tried purchasing any designs from Embroidery Library. You'll find lots and lots of great heavy equipment images to buy.