Simplify the following text for a Grade 7 native English-speaking person.
Original: It was named in 1900 for William Thomas Lopp , a missionary among the Inuit and the civilian leader of the 1897 â `` 98 Overland Expedition .
Simplified: It was named in 1900 for William Thomas `` W.T. '' Lopp , the civilian leader of the 1897 â `` 8 Overland Expedition .