Both are acceptable; snowmachine is preferred. Use “snow-go” only in quotes.
sealskin
No hyphen in any use.
Sea-Tac
Acceptable on second reference for Seattle-Tacoma International Airport. The city is SeaTac.
Scientific Crime Detection Laboratory
Use full name on first reference. The crime lab or state crime lab acceptable on second reference.
Public Employees’ Retirement System
PERS is acceptable on second reference.
Providence Alaska Medical Center
Providence or the hospital acceptable on second reference.
Potter Marsh
Not Potters Marsh.
Port of Anchorage
The port is acceptable on second reference.
pioneers’ homes
But Anchorage Pioneers’ Home.
Permanent Fund
Capitalize when referring to the Alaska Permanent Fund or Alaska Permanent Fund Corp.; Permanent Fund dividend.