I'm putting this up as a resource — this pattern is out of print — the zip up a baby hoodie pattern by Marge Webster
Here it is for download:
I tracked down the zip up a baby sweater pattern while looking through some old craft magazines from the 80s at the library. I had to get them to open up the archives!
If you came here just for the pattern, please consider visiting my friends at aster & clove to view my stationery.
I don't have any pictures from the pattern (it's just a photocopy), you can see projects here if you're on ravelry. I will use this excuse to put in a little picture of my favourite baby, though unzipped.