What was the title of the first 'Paddington Bear' book by Michael Bond?

Once upon a time, Michael Bond (1926-2017) was doing some last-minute shopping in Oxford Street when it started to snow. Seeking shelter, he found himself in the toy department of Selfridges. Sitting on a shelf was a very lonely, small bear. Bond thought to himself, “I can’t leave him there all over Christmas,” purchased the bear and took him home. Bond named the bear Paddington after the nearest railway station to his house. A few weeks later, Bond sat at his typewriter, waiting for inspiration to strike, when he looked up to see the little bear sitting on the mantelpiece. Remembering the moment he found the bear, Bond wondered, “what would happen if a real bear landed up on Paddington station.” So, he began to write. On 13th October 1958, 'A Bear Called Paddington' went on sale. It proved extremely popular and sold out by Christmas.

Paddington Bear is a friendly, polite bear from Peru, where he lived with his Aunt Lucy. It was time for Aunt Lucy to move into the Home for Retired Bears in Lima, so Paddington set off with his hat on his head, his suitcase in hand, and a label around his neck that said, “Please look after this bear. Thank you.” After travelling as a stowaway on a lifeboat and eating copious amounts of marmalade, the little bear arrived at Paddington Station, where the first story begins. Paddington is found on the platform by the Brown family, who take him home to 32 Windsor Gardens near Notting Hill.