Seems like when it rains… it pours free patterns:
–Nancy’s Sewing Basket (safe haven/ evil addiction employer) also put out a simple apron pattern they call the Manhattan Apron. Here are PDF one and PDF two.
-While I was surfing I found that Selvedge Magazine put out a cute little free PDF called Tie Your Own Apron Strings to promote the book Learn to Sew by Alison Reid
-Cool blogger Still Dottie has a free how to for a Smock Apron with awesome graphic for pattern.
Hippy Long Stockings 
Hi there,
Many thanks for promoting my book on your site. Liking the look of your apron a lot.
Regards
Alison
Wow, I am excited that YOU like my apron. Thank you so much for allowing Selvedge Mag to print up this pattern b/c that is how I found your wonderful little book.