Partial Revocation by Physical Act

When I was in Alabama recently I had the pleasure of spending a day in Selma.  It was quite a treat to see that city again, which has loomed so large in our nation's Civil Rights history.  (You may recall I had a civil rights trivia question out of it.)  Right now, though I want to post a picture of a will probated back in the 1960s.  It's a great example of partial revocation by physical act.  Look at how the testator literally "cut out" the beneficiaries!