The America name was first used in 1895 on a bell-top alarm clock. 7 major case styles (and some variations) have been identified. The America was replaced with the America II in 1964.
The America models made in Canada have some different styles.
When identifying a style, observe the case shape and ignore the case and dial color, as some styles were made in various case and dial colors, as shown in the detail page for each style.
The Western Clock Mfg. Co. received a trademark for AMERICA on December 4, 1906. The registration contains the statement "The trade-mark has been continuously used in the business of said corporation since the 17th day of April, 1894."