Simplify the following text for a Grade 10 native English-speaking person.
Original: In the Percy Anecdotes , published pseudonymously in 1820 , the authors state that `` How long the ducking-stool has been in disuse in England does not appear . ''
Simplified: In the Percy Anecdotes , published in 1820 , the authors state that `` How long the ducking-stool has been in disuse in England does not appear . ''