ships -- steamboats	1952: 42, 48 1958: 47, 56, 60
ships -- steamboats --- book review ---- Recent Steamships on the L.I. Sound ----- by Edwin Dunbaugh	1960: 65-66
ships -- steamboats --- More About Old Steamboats ---- by John Tooker	1945: 176+(L)
ships -- steamboats --- Old Time Steamboats ---- letter by Harry B. Squires	1945: 127(L)