Lauttasaaren länsipuoliset Koivusaari ja Leppäsaari Senaatin kartastossa.
<div class="fn value">
The Russian Ministry of War Topographic Department</div>
from 1870 until 1917 <div style="display: none;">date QS:P,+1500-00-00T00:00:00Z/6,P580,+1870-00-00T00:00:00Z/9,P582,+1917-00-00T00:00:00Z/9</div>
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