Memory quilt

I have searched this newsgroup for an answer to this question, but all
the answers I seem to keep finding does not discuss washing the quilt.
My wife would like to make a memory quilt using her mothers and
grandmother pictures. She is planning on printing the pictures on
iron on transfers and transferring them to the quilt. When the quilt
is washed, will the pictures wash off? If so, is there a way to
preserve the pictures from washing off? Any info would be greatly
appreciated!

Aaron Toponce