If you're interested in collecting uncut sheets of currency it's good to understand what factors into how they are valued.
Police Auctions Canada - 1973 Canadian Uncirculated $1 Dollar
Collectors Corner : Search Coin, Currency, Card, Stamp Listings
Unmarked Uncirculated Dollar Bill - Coin Community Forum
Bank of Canada Paper Money Uncut Sheets for sale
Bank of Canada Paper Money Uncut Sheets for sale
$1 - $100 U.S. Notes, U.S. Bills & Dollars
Large Bills in U.S. Currency - APMEX
Apmex
Uncut Sheet of $1 Bills CU w/Folder