https://www.loc.gov/item/prn-18-036/?loclr=eanotw The library of Congress has given us a historical gift - the scouting reports of Branch Rickey. He was a vital part of baseball history, even beyond signing Jackie Robinson and this is where you can check it out.

Here are some notes from the introduction and entries that struck me:

• Rickey’s 1963 scouting report on Hank Aaron, who broke Babe Ruth’s long-standing home run record of 714 in 1974. Rickey wrote "Surely one of the greatest hitters in baseball today. Can hit late with power, - good wrists. But in spite of his hitting record and admitted power ability, one cannot help think that Aaron is frequently a guess hitter."
  
• A 1955 scouting report on Roberto Clemente, who amassed 3,000 hits in his Hall of Fame career for the Pittsburgh Pirates
  
• A report dated March 30-31, 1964, on future National Basketball Association great Dave DeBusschere, where Rickey predicted that DeBusschere “should become a corking good major league pitcher.”
  
• For Hall of Famer Bob Gibson, Rickey noted on March 14, 1964, “when trying out young players… scouts and coaches would keep in mind Bob Gibson as a model for comparison and rate the prospect’s stuff accordingly.”
  
• About Richie Allen - “Rollie Hemsley at Indianapolis, Bill Adair at Toronto, Larry Shepard at Columbus, Kerby Farrell at Buffalo and Harry Walker at Atlanta all believe that outfielder Allen is the best major league prospect in the International League. A colored boy, very young, and belongs to Philadelphia. He has extraordinary power to all fields. Arm not great, but adequate. Highly desirable in any deal with Philadelphia. I am sorry not to have been able to see this boy in action, but rating give to the player by baseball men generally put him immediately as a regular in any major league outfield. I would risk a heavy deal to have the Cardinals Get this player.”
  
• Minnesotan Twins 2B Bernie Allen – “Tall boy from Purdue. Left hand hitter, has power and I believe he can outrun Rollins. I doubt if he is a .300 hitter. Hit .269 in 1962, Not hitting a lick this year…”
  
• Bob Allison – “A 275 hitter with exceptional power. Looks the part of a great athlete. Right hander all the way. He has everything it takes to be a long time major league regular.”
  
• Earl Battey – “A big colored catcher. Looks overweight, but has a remarkable action. Quick and has power at the plate, plenty of it. Looks like he likes to play. I can imagine him in a World Series.”
  
• Minnesota born, Yankee – John Blanchard – “If Blanchard’s habits were good and his team relationship satisfactory, St Louis could use him. I would not take him unless I were permitted to have a conversation with the player with results satisfactory to myself.”
  
• Harmon Killebrew – “A big right hand hitter with as much distance power as any man in the game. Strikes out a great deal. I would not be interested in obtaining his contract in any kind of possible trade. I don’t want him at the price.”
  

It will take a lot of time to sort out everything, but this is a very personal glimpse into the game in the early 60's.