Amazing list! Unless I missed it there are Detroit Tigers wearing EH in 2011 for Ernie Harwell. 

http://www.tradingcarddb.com/ViewCard.cfm/sid/48224/cid/1877578/2011-Topps-597-Rick-Porcello-

Also, Yankees wore 8 on their arm last year for Yogi Berra.

Chicago Bears have GSH for George Stanley Halas, Sr.

Detroit Lions now have WCF on their jerseys for William Clay Ford, Sr.

Maybe you had these and I missed it.

Thanks!

Great work on the list. I really like that you labeled them as to who they were for, especially as some are really hard to see on the scans.

Here's a couple NBA ones for you: 

http://www.tradingcarddb.com/ViewCard.cfm/sid/2071/cid/618871/1988-89-Fleer-115-John-Stockton Pistol 7 for Pete Maravich

http://www.tradingcarddb.com/ViewCard.cfm/sid/2955/cid/729226/2001-02-E-X-14-Jerry-Stackhouse?PageIndex=1 Flag and banner, worn by all NBA teams during 2001-02 season for 9/11 victims

http://www.tradingcarddb.com/ViewCard.cfm/sid/57713/cid/2293387/2010-11-Panini-Season-Update-144-Gerald-Wallace 20 for Maurice Lucas

http://www.tradingcarddb.com/ViewCard.cfm/sid/146982/cid/9565404/2016-17-Panini-Prestige-7-Stephen-Curry 42 for Nate Thurmond

and a couple for NASCAR

http://www.tradingcarddb.com/ViewCard.cfm/sid/5820/cid/1816765/1994-Maxx-225-Dale-Earnhardt 28 Davey Allison

http://www.tradingcarddb.com/ViewCard.cfm/sid/5835/cid/1818141/1994-Traks-126-Sterling-Marlin?PageIndex=1 51 Neil Bonnett

@dsorek Thanks! I'll add them. I didn't add the GSH since that's basically part of their uniform for a long time.

@Billy Kingsley I'll make sure to add those too. I completly forgot all about the NBA!

I know I've seen some more NBA ones, but I don't remember what cards they are on. When I come across them I will give you some links. One to watch for in the coming season, the Detroit Red Wings wore an I on their shoulder near the end of the season for the team owner, who died during the year. Thanks again for doing this list, and so comprehensively! 

@Billy Kingsley You're welcome! If you come across them, I'll be happy to add them. I'll keep on eye on the Red Wings cards.

Here's a card that shows the 42 in the yellow band for the Warriors better than the one I gave you

http://www.tradingcarddb.com/ViewCard.cfm/sid/146286/cid/9483161/2016-17-Panini-Revolution---By-the-Numbers-3-Kevin-Durant

Here's a card that shows the 42 in the yellow band for the Warriors better than the one I gave you

http://www.tradingcarddb.com/ViewCard.cfm/sid/146286/cid/9483161/2016-17-Panini-Revolution---By-the-Numbers-3-Kevin-Durant

@Billy Kingsley Thanks! I just added it.

Here's one on a card I just got: Plaid circle with 77 is for coach Jack Ramsay http://www.tradingcarddb.com/ViewCard.cfm/sid/99820/cid/7126729/2014-15-Panini-Prizm-28-LaMarcus-Aldridge

@Billy Kingsley I just added it along with some other ones. Thanks!

Here's another one for you.  The Vancouver Canucks jerseys had the words Babe on them in the late 80s in memory of Babe Pratt.

http://www.tradingcarddb.com/ViewCard.cfm/sid/4868/cid/1186863/1989-90-O-Pee-Chee-288-Larry-Melnyk

https://en.wikipedia.org/wiki/Babe_Pratt_Trophy

Great list by the way!!

@DanD Thanks! I'll add it right now. I'm glad you like it.

Found another: Los Angeles Lakers wore JB in honor of Jim Buss, the team owner. The Steve Nash card in the same set also shows the patch on a different color jersey. http://www.tradingcarddb.com/ViewCard.cfm/sid/84610/cid/6267448/2013-14-Panini-Prestige-154-Kobe-Bryant

The Royals are wearing a small black patch on their right sleeves these season.  The patch reads: ACE in memory of Yordano Ventura, who died during the offseason.  I looked on the Topps Now cards and the only place you can see it very well is card #385.

http://www.tradingcarddb.com/ViewCard.cfm/sid/147231/cid/10037446/2017-Topps-Now-385-Whit-Merrifield-/-Jorge-Bonifacio-/-Eric-Hosmer

Great list!  Super idea.  I enjoyed going through it.

Correction on my part- it was Jerry Buss who died that the Lakers honored, Jim is his son and still very much alive.

Found another: http://www.tradingcarddb.com/ViewCard.cfm/sid/58743/cid/3388033/2010-11-Panini-Adrenalyn-XL-291-Al-Thornton

Unless I missed it, all NFL players wore GU63 patches in the 2008 season to honor Gene Upshaw.

http://www.tradingcarddb.com/ViewCard.cfm/sid/9430/cid/1073789/2009-Philadelphia-140-Gibril-Wilson

@C2Cigars I forgot that one! I'll add it now. Thanks for the suggestion. 

The Cubs wore Harry Caray on their right sleeve in 1998 as you've indicated, but they also wore a Hey Hey patch on their left sleeve after August in 1998. Since it wasn't there long there aren't many cards with the patch. Hard to see on this Mark Grace Sports Illustrated card, but it's there above the Cub patch on his left sleeve.

http://www.tradingcarddb.com/ViewCard.cfm/sid/1335/cid/234026/1999-Sports-Illustrated-99-Mark-Grace

Here's the actual patch on a 1998 Kurt Miller Cubs jersey from a Mears auction.

<img src="http://sports.mearsonlineauctions.com/ItemImages/000064/64085e_lg.jpeg">

@Lerxst2112 Thanks! I didn’t notice that at first. I’ll update it.

Jake deGrom's All-Star card has a nice shot of the Mets Rusty Staub memorial patch

https://www.tradingcarddb.com/ViewCard.cfm/sid/175264/cid/11872305/2018-Topps-Update-US177-Jacob-deGrom

@stevejrogers Thanks. I'll add it.