On April 3, 1860, the first Pony Express mail, traveling by horse
and rider relay teams, simultaneously left St. Joseph, Missouri,
and Sacramento, California. Ten days later, on April 13, the
westbound rider and mail packet completed the approximately
1,800-mile journey and arrived in Sacramento, beating the
eastbound packet’s arrival in St. Joseph by two days and setting
a new standard for speedy mail delivery.

On March 13, 1942, the Quartermaster Corps (QMC) of the United
States Army began training dogs for the newly established War
Dog Program, or “K-9 Corps.”

Well over a million dogs served on both sides during World War
I, carrying messages along the complex network of trenches and providing some measure of psychological comfort to the soldiers.

On March 11, 1989, "Cops," a documentary-style television
series that follows police officers and sheriff’s deputies as
they go about their jobs, debuts on Fox. "Cops" went on to
become one of the longest-running shows in television
history. It went off the air in 2020.

The show, which was created by John Langley and Malcolm
Barbour, was a pioneer in reality television.

When the cameras of “COPS” were in Portland, Oregon.

March 10, 1876, the first discernible speech was transmitted
over a telephone system when inventor Alexander Graham
Bell summoned his assistant in another room by saying,
“Mr. Watson, come here; I want you.” Bell had received a
comprehensive telephone patent just three days before.

On March 9, 1959, the first Barbie doll went on display at the
American Toy Fair in New York City.

Eleven inches tall, with a waterfall of blond hair, Barbie was
the first mass-produced toy doll in the United States with adult
features. The woman behind Barbie was Ruth Handler, who
co-founded Mattel, Inc. with her husband (below) in 1945. 
        
        
        
        
        
       

Elliott and Ruth Handler

Mattel’s headquarters and factory near LAX in 1956.