Tim, Thanks for your help! Unfortunately, I don't have 'Adapt to Image' as an option under Product Card (see image).  Alternatively, when I put the code you suggested into Custom CSS, it's cropping the photos as such: 

I've seen people post code in this forum that can be plugged into different sections of the Theme's code to get all of the photo aspect ratios the same. Unfortunately, the 'Trade' Theme has different code sections than the ones with instructions, so ...