Aldrich & Son Strike A Pose

Hats off to any one who knows the occasion for this formal gathering in front of what is obviously a very large statue that includes a horse (and some military hero atop, no doubt). I'm clueless about the organizing principle, or the names of most of these people. Fortunately, Aunt Ethel's handwriting on the rear of the photo provides a few details:

Father is in second row=third from right (6th from left)
Fred is second row=fifth from right (fourth from left)

"Father," of course, is Frank Aldrich and Fred, the young lad who's easy to spot in this group, is his son. (For an earlier photo of Frank and all his sons, see this post here.)

I have no idea why this was taken or what it represents, but it's fun to speculate. A Sunday afternoon in Worcester for the reunion of Civil War vets and some of their wives and family? Or perhaps a civic meeting of one sort or another with a break when someone with a camera stumbled by and the crowd decided to record the assembly for posterity?

Meantime, I'd love to know where this was taken. If the statue remains, it should be easy to identify. A park, no doubt. Worcestor is an obvious guess. Can any one confirm or offer the true locale?

Also, what year could this be? The answer's straightforward once you know Fred's birthdate. I don't have that information handy, but my guesstimate, based on simply studying the photo, is sometime around or just after World War I, give or take, i.e., 1920.

In any case, it's a grand setting and a worthy addition to the Waite/Aldrich photo archive.