As a general rule, anything that can be notarized can receive an Apostille.
However you must consider that the notary does the notarization; often at the client premises, while the Apostille is issue at the office of the Department of State. I have actually notarized a fish, honest. The angler wrote with magic marker on the side of the fish "I caught this fish" and I attached a "loose acknowledgement" with a staple to the tail. Thus, he had from Kenneth A. Edelstein a validly notarized fish! However, I would hesitate to bring the notarization bearing fish to the office of the State Department for an Apostille. I suggested he take a picture of the fish, which I notarized and then Apostille processed the photograph. He simply signed the back of the picture with his "I caught...." statement.
It is much more common to notarize paper documents. These vary from: copies of a passport, officially issued copies of a marriage license, to business contracts. Just about any document that can be signed can receive an Apostille after a valid notarization. After the notarization, which must be flawless, some jurisdictions require the notary's signature to be validated. I would not bring a fish to the municipal building to have my signature verified! Some documents contain a "notarization" when they are issued. In New York City, the "long form" of Birth, Death, and Marriage certificates are issued "notarized".
As a New York Mobile Notary Public, over the past decade, my experiences have varied from the routine to the extraordinary. I have obtained a single Apostille for a Power of Attorney for a lady's attorney in Italy to sell her villa. At the other extreme, I was instrumental in processing literally dozens of Apostille bearing forms, for several nations; relating to the sale of a supertanker. Many of these also required Embassy Legalization for the sale to proceed. That was a project! However, most clients have lesser needs - but to them the accuracy and speed are just as important. The key to a successful Apostille project is the foundational notarization - it must be perfect.
As a general rule it is best to obtain an Apostille, when state or county issued documents are involved; in the state where the documents were issued. It is possible to bypass this suggestion - but the Apostille obtained might not be acceptable at the point of use. You should discuss the actual ultimate use of the document with your notary. If the notary is not sure how you should proceed, your situation should be brought to an attorney. A notary is forbidden to give legal - "how shall I proceed" advice - and the additional skills of the attorney are worth the expense to be sure your plans are achieved.
Another Happy Camper: Apostille for use in FRANCE
Kenneth Edelstein is the best! I had a "catch -22" that would have made Joseph Heller do somersaults... Ken found a way out through his tenaciousness, his competence, his knowledge, his insightfulness... what can I say but a humble "thank you" in front of this amazingly kind and thoughtful man... it doesn't hurt that on top of it all, he has a wonderfully dry and "New York" sense of humor!
Lots of best wishes and love to you and Sandy... will call you if you don't mind for that champagne when we come back in the summer...
Andi
PS it goes without saying that if you come over to Paris we'll do the town together ...