hi,
this design is very popular :o) Seems that you can find it on a lot of embroiderysites and also on two designart-sites (designstitch from there is that from tubby and clipartown> brittdesign).Designs by sick.com has it too, there signs are included.
greetings, ansalu
Designstitch and Clipartown are both the same sites. Clipartown is a part of Designstitch.
here's the link