The first London A-Z was compiled by a young woman called Phyllis Pearsall in the 1930s. She was up every morning at 5am and in total apparently walked over 3,000 miles through the streets taking notes. Her completed 23,000 street entries were kept in boxes under her bed.
As no publisher was interested, she published it herself and delivered copies to branches of WH Smith in a wheelbarrow.
She died in 1996 and by then the A-Z had sold millions of copies!
Today, what would millions of locals and tourists do without it? Probably use their iphones!
Image Source: www.az.co.uk