I was saddened to hear of Mr. Brock's passing as well.
When I was a teenager, my first job was as a caddy at a local country club. In the caddy shack area (where you wait to be assigned) they had a RC Cola machine and at the end of most days, I would take home the empty cans that were left behind.
For years, I just had these cans in a box and at one point 20 plus years ago, I decided to get them signed if I knew I'd be meeting a player (banquet, etc.).
Fortunately Mr. Brock made an appearance at a local hospital 7-8 years ago (as a speaker) & I was fortunate to secure his signature on my RC Cola can:
RIP Lou