LET'S PRETEND- Let's Pretend started radio life as The Adventures of Helen and Mary in 1934 when it was transformed by Nila Mack into the show that would last for two decades until 1954. Mack believed that, if the stories were for children, then children should tell the story. On July 12, 1947, they told the tale of "The Brave Little Tailor" for sponsor, Cream of Wheat. A meek little man has "killed seven with one blow" and has everyone terrified.
 
ROMANCE - Actor Henry Fonda stars in "Casanova Brown" on ROMANCE from November 13, 1945.
Romance_1945-11-13_Casanova_Brown_wHenryFonda 24:45
 
People are Funny - was a long-running American radio and television game show, created by John Guedel that remained popular throughout the 1940s. The program ran from 1942 to 1960. The program's stunts and audience participation were calculated to reveal the humorous side of human nature. After contestants were sent from the studio to perform a task in public, the audience was told how the contestant was being double-crossed. Hosted by Art Linkletter, here is a show from January 17, 1956 

Whisperer. July 08, 1951. NBC net. Sustaining. The first show of the series. "The Whisperer" is a brilliant young attorney with a secret identity. He tackles the plans of Scurelli to sell marijuana to the unsuspecting youth of the city. Alice Backes, Ann Gill (writer), Betty Moran, Bill Cairn (director), Carleton Young, Eddie Firestone, Jerry Farber, John Duffy (original music), Julius Crowlbein, Paul Frees, Ruth Perrin, Stetson Humphrey (creator). 

Unit 99. September 06, 1957. Program #3. ABC net origination, AFRTS rebroadcast. The first call: a woman has a gun. James B. Hicks (host, Chief of Sacramento Police), Dan Meredith (Sergeant on duty), Tony Kester (director).
 
Treasury Star Parade. September 10, 1943. Program #253. Treasury Department syndication. Molly and Doc Gamble try to convince Fibber to water the lawn. Jim Jordan, Marian Jordan, Billy Mills and His Orchestra, The King's Men, Harlow Wilcox (announcer), Don Quinn (writer), Thelma Ritter (writer). 

The Weird Circle. January 08, 1944. Program #26. RCA/NBC syndication. "Frankenstein". Sponsored by: Commercials added locally. Many, many liberties taken with the original story, but still a classic. Mary Shelley (author). 

 
TOTAL TIME: 2:55:34.599
SOURCES: Wikipedia and The RadioGoldindex.com