Canada. Legislature. Legislative Assembly.
![[William Wheeler Hubbell, authorized to apply for patents.]](https://covers.openlibrary.org/b/id/10200621-M.jpg)
United States. Congress. Senate. Committee on Patents
Babcock & Wilcox Company.
![[To promote education of the blind.]](/assets/img/no-cover.svg)
United States. Congress. Senate. Committee on Education and Labor.
Duncan Haws
Virginia Lee Burton
