Will Lee

William Lee (born William Lubovsky; August 6, 1908 – December 7, 1982) was an American actor who appeared in numerous television and film roles, but was best known for playing Mr. Hooper, the original store proprietor of the eponymous Hooper's Store. He was one of the four original human characters on Sesame Street, from the show's debut in November 1969 until his death on December 7, 1982, at the age of 74. Description above from the Wikipedia article Will Lee, licensed under CC-BY-SA, full list of contributors on Wikipedia.
Cast

A Sesame Street Christmas Carol
Mr. Hooper (archive footage)

Melody Lane
Mr. Russo

A Special Sesame Street Christmas
Mr. Hooper

They Live by Night
Jeweler

Casbah
Begger

Little Fugitive
Photographer

Hit and Run
Joseph Kahn

Sesame Street: 40 Years of Sunny Days
Mr. Hooper (uncredited) (archive footage)

Street Gang: How We Got to Sesame Street
Self (archive footage)

Backfire
Cab Driver (uncredited)

Shakedown
Cabbie (uncredited)

Ball of Fire
“Benny — the Creep”

Saboteur
Rogers (uncredited)

Whistling in the Dark
Herman the Druggist

Playing for Time
Shmuel

Babes on Broadway
Shorty, Drugstore Waiter / Cook (uncredited)

Daniel
The Judge

Christmas Eve on Sesame Street
Mr. Hooper

An Affair of the Skin
Waiter

A Walking Tour of Sesame Street
Mr. Hooper

Nourish the Beast
Old Man

This Way to Sesame Street
Mr. Hooper

Sesame Street at Night?
Mr. Hooper (archive footage)