When on holiday in Berwick the artist often gave his work away. Now a new exhibition reveals the value of drawings that survived in a shoebox A 1958 drawing of a family with their dogs by LS Lowry from one of his many holidays in Berwick-upon-Tweed is to go on public display for the first time. But the sketch is lucky to have survived: it was kept in a shoe box for 43 years, emerging somewhat creased because its recipient had little idea of Lowry’s significance.The signed and dated drawing on headed notepaper from the Castle Hotel, where the artist