Letter, draft, Robert O'Brien to Slater?, 11 July, stating intention of Ralph Westropp to restore S. transept of St Marys Cathedral, inviting him over and detailing plans. Letter changes from pen to pencil, and may be unfinished. Two sheets folded plus one half sheet, written ten sides. Embossed at front: Limerick Club. Watermark: horn in crowned oval over Cowan & Sons 1860.