all my sons

the apple tree

is a memorial for Larry

George's hat

It used to belong to his father. It shows us he now sympathizes with him.

p-40's

the airplanes with the cracked cylinder heads

November 25

Larry's favorable day

astrology

Kate asks Frank to check Larry's horroscope

Larry's clothes and shoes

are all shined and cleaned. It shows us that Kate is still waiting for Larry to come back

200 men

the number of men Chris was in command of in his company

the letter

Larry's suicide letter makes Keller see what he did wrong and leads to his suicide

grape juice

George's favorite drink as a kid. Kate makes him grape juice to connect him to his childhood when their families used to be on good terms

21 pilots

21 pilots died during the war because of the cracked cylinder heads

The Holy Family

Sue calls the Kellers that way sarcastically

J.O. Keller, Inc

Keller's company

Christopher Keller, Inc

how Keller wants the company to be called after he gives it to Chris

a Christmas card

Annie and George didn't even send their father a Christmas card while he's in prison

pneumonia

the reason Keller gives for not coming to the office the day the cracked cylinder heads were shipped

a star

the star of one's honesty

a bullet

the way Keller kills himself; the way he says he'll kill himself if there's anything bigger than family

a pair of socks

Chris tells Annie how a soldier in his company gave him a pair of socks as an example of being better

nickels and dimes

Joe uses this term to explain that many people back home were looking to make a profit during the War. It refers to the theme of War Profiteering.