The Washington Free Beacon makes no attempt to present itself as non-partisan but does provide photos. I can’t verify that those photos are authentic but I assume that the NYT, CNN, etc. have verified them before publishing this story.
Edit: I also found this additional newspaper clipping, which appears to be the source for the following claim:
And a story published in another Nebraska paper on August 11 that year said he would “leave Sunday en route to China” after having “about given up participating [in WorldTeach] earlier this summer during the student revolts in parts of China.”
I’m not saying Trump’s tariff proposal is a good idea (I don’t know enough relevant economics) but that article’s own chart shows that tariffs increased to Trump levels after the Great Depression started and then declined back to below Trump levels several years before the Great Depression ended. I don’t think the data in the article supports the article’s link of high tariffs and the Great Depression.