I usually run across garden calendars at the websites of local nurseries and public or estate gardens. This site might have what you are looking for. You can type in your zip code and it will give your zone, which is not always easy to figure out from the USDA map.

Here is a link that might be useful: Gardening123

This may be too late to respond to your question, but I have found a series of books at Barnes & Noble - Month by Month Gardening in (your state). They have my state, you should check there.

Willhiteseeds.com has a great garden planner ,spring and fall on the flipside. It is like a slide rule , about 4in.X 8 in.and loaded with information and very easy to use. cost is $1.90 and worth every penny. bill

I tried the link lilone posted, but bein "puter challenged" I didn't get any results with it.
But anyone can make their own calendar, and probably a better one than any in extistence. For one thing, I've found most gardeners are too cautios, wait too long in spring to plant. (I'm strictly into growing things you can eat, so my remarks are geared toward them.)
I happen to be planning to write a Year-Round Garden Calendar for some gardening friends with less experience than the 34 years I've got.
Here are the two main things I intend to include:

1. Get the Spring Frost Date for the area each one lives in. That's absolutely essential information.

2. Count backwards from that date, 10 weeks for "the safe veggies," and 12 weeks for what I call the "take advantage of an Early Spring Veggies."

Here's what I mean by that. A farmer or nursery simply Has To be cautious. They can't risk losing thousands of dollars worth of plants to a late frost. But we home gardeners can take risks, plus take measures to protect plants against a late frost, that they simply couldn't do or afford.
It will take from a few days to two weeks for various veggie seeds to sprout. And you are supposed to set "6 to 8-week-old seedling" in the garden at the proper time. So counting 10 weeks backward from the Spring Frost Date will normally give you seedlings of the right age at the right time.
The other seeds, the "take advantage of an early spring" ones, you plant even earlier "jes in case." We all know weather isn't exactly predictable. Look at this year! So next year it might be 20 degrees above freezing a month sooner than normal. But if you have no seedlings old enough, you couldn't take advantage of that early warm weather.
But, some of you are probably thinking, what if there IS a late frost. Well, first you could buy some Wall 'O Waters, plstic Teepees with chambers you fill with water. They've been tested to protect plants to temps down to 16 degrees. But if you don't want to spend the money for them, you can simply cover your plants with a plastic bucket- never metal-or a cardboard box. You would only need to do it one or two nights at most. You would have to be sure to take the covering off, or your plants might cook in the next day's sun.

Even if "the worst happened," say you lost the early plants every third year, getting that first tomato, bell pepper, or whatever weeks before anyone else in your area I think would be worth the extra effort. And keep in mind, with things that are "all season bearers" - like tomatoes, peppers,cukes, squash- the sooner you get the first one, the More You Get for the Year!