According to the CDC, 95% of confirmed cases in 2015 were in 14 states: Connecticut, Delaware, Maine, Maryland, Massachusetts, Minnesota, New Hampshire, New Jersey, New York, Pennsylvania, Rhode Island, Vermont, Virginia, and Wisconsin. Black-legged ticks have been found in 43 states, as of last year.
Standard invoices typically include the following information, according to Semblance Systems Pty Ltd.: reference number, sent and due dates, seller's name and contact information, itemized list of goods or services, price, payment terms, and payment options.
Also - you can do named fields - so that if you select the fields C2:C11 - then you can name them as invoices (in excel 2003 it's in the top left corner - there's a selection box you can type in. Just select and type a name in there).