Seasons in St. Louis, one pennant, no World Series.
The other team
The Browns and the Cardinals shared Sportsman's Park. For most of the century the Browns were the tenants and the Cardinals were the ones people went to see. In some seasons the Browns drew fewer than a hundred thousand people across the whole year.
1944
Almost every club had lost players to the war. The Browns had lost fewer, because a large number of theirs had been classified unfit for service.
They won the pennant on the last day and played the Cardinals in the World Series, every match of it in the same ground. They lost in six.
Veeck
Bill Veeck bought the club in 1951 and understood he could not outspend anyone, so he tried to out-entertain them.
On 19 August 1951 he sent Eddie Gaedel out to bat in the first inning of the second game of a double header. Gaedel was three feet seven inches tall, wore the number one eighth, and had been instructed not to swing. The pitcher walked him on four pitches. The league banned the practice the following day.
Later that season Veeck let a section of the crowd manage a match by holding up placards. The Browns won it.
The end
Veeck tried to force the Cardinals out of St. Louis and failed, because their owner sold to a brewery with more money than he had. He then tried to move the Browns to Milwaukee and to Baltimore, and the other owners blocked him.
He sold the club. The new owners moved it to Baltimore in 1954 within weeks.
After
The Baltimore Orioles have won three World Series.
The Browns won none in fifty two years.