Thanks openside! I’m all set now.
Just one quick comment for others going down my beginner path:
the pointer about the lookup field is a great one and let’s one retrieve the display value when specifying a reference field in the fields you want returned (without it, you get the identifier string). My initial query was about suppling the display value in the selection criteria - which works without a lookup field. My issue was a mistake in how I structured the initial get call.