I have a couple of sentences in a forthcoming manuscript that I'd either like to provide further footnote support for, delete if they are not true, or provide citations on both sides if the issue is disputed:

(1) there is no historical correlation in the U.S. between levels of union membership and wage growth; and

(2) wages during the Lochner era (approximately 1897 to 1937) and beyond rose with productivity.

(3) Workers' wages, working conditions, and standards of living rose consistently from the 1880s through the early 1920s despite massive immigration of unskilled workers.

If you can help, please provide citations in the comments.