https://www.thegazette.com/IowaIdeas/stories/iowans-ideas-a-renewed-interest-in-apprenticeships-20190505
http://www.ibew.org/media-center/Articles/19Daily/1905/190507_PhotoContest2019
http://www.ibew.org/articles/19ElectricalWorker/EW1905/Cooper.0519.html
http://www.ibew.org/articles/19ElectricalWorker/EW1905/GasWorkers.0519.html
https://www.iea.org/newsroom/news/2019/may/renewable-capacity-growth-worldwide-stalled-in-2018-after-two-decades-of-strong-e.html