But you gotta keep your head up, oh, And you can let your hair down, eh. You gotta keep your head up, oh, And you can let your hair down, eh. I know it's hard, know its hard, To remember sometimes, But you gotta keep your head up, oh, And you can let your hair down, eh.
All U.S. citizens may apply for a passport card. If you have a U.S. passport book and are eligible to use Form DS-82, you may apply for the card by mail. You must renew your passport book at the same time that your apply for your passport card so your passport book and card have the same number.
When referring to a document number for a passport, generally that is the passport number. If it is a US Passport, that it is the 9 digit number located in the top corner of the passport info page. Other Countries have different types of numbers (usually with letters added) but most often it's in the same place.