¹ Some government publications are not subject to copyright, including bills, acts, regulations, court judgments, royal commission and select committee reports, etc. See references [1] or [2] for the full list.
² means the typographical arrangement and layout of a published work. eg. newsprint.

Pead samuti lisama Ühendriikide avaliku omandi malli näitamaks, miks see teos on Ameerika Ühendriikides avalikus omandis. Note that this work might not be in the public domain in countries that do not apply the rule of the shorter term and have copyright terms longer than life of the author plus 50 years. In particular, Mexico is 100 years, Jamaica is 95 years, Colombia is 80 years, Guatemala and Samoa are 75 years, Switzerland and the United States are 70 years, and Venezuela is 60 years.