1912, Algernon Blackwood, "Sand" in Pan's Garden: A Volume of Nature Stories, London: Macmillan & Co., p. 234, https://archive.org/details/pansgardenvolume00blacuoft
Through the large windows where once the Khedive held high court, the sunshine blazed upon vistaed leagues of Desert.
The vistaed mountains afforded many vantage points for photographing the lake.
Observed in or as if in a figurative vista.
1909, Francis Thompson, The Hound of Heaven
Up vistaed hopes I sped.
1917, Siegfried Sassoon, "To-day" in The Old Huntsman and Other Poems, New York: E.P. Dutton & Co., 1918, lines 10-14, http://www.bartleby.com/135/58.html
To-day I know / How sweet it is to spend these eyes, and boast / This bubble of vistaed memory and sense / Blown by my joy aloft the glittering airs / Of heavenly peace.