sentences:  There was no Penrose annual for 1963 and it re-appeared in 1964 with a new editor, Herbert Spencer, who continued until the 66th volume in 1973, when the title was sold to Northwood.Bryan Smith then edited two volumes before handing over to Penrose's final editor, Clive Goodacre (initially assisted by Stanley Greenwood).Goodacre edited Penrose until Northwood closed the publication down in 1982 - the last volume is number 74.