Hudson Sign Locations
There are 81 Hudson Signs found throughout Hyrule. Addison can be seen holding these signs in various locations through Hyrule. All the signs appear on the surface, so there are no signs in either the Sky or the Depths. Link must use the resources found around the sign to get it to stand up. For successfully doing so, Addison will reward Link with 20 Rupees, some Rice Balls that have various attributes, and then a third item. The third item could be a Bomb Flower, a Sleepover Ticket, a Puffshroom, or a Muddle Bud.
Location - Akkala Wilds
Just northeast of Skull Lake, right on the edge. Use the nearby Hover Stones to hold up the sign.
Location - Applean Forest
Just northeast of the forest by the beach. Use the nearby Hyrule Restoration Materials to hold up the sign.
Location - Atun Valley
Found at the west side of the valley, near the fork in the road. Link can use the nearby restoration materials to hold up the sign.
Location - Barula Plain
Found at the very south end of the plain. Link can use the Hover Stones to hold the sign up.
Location - Brynna Plain
Found at the north end of the area, Link can use the Hyrule Restoration Materials to hold up the sign.
Location - East Akkala Plains
Found at the southeast end of the East Akkala Plains along the main road, just northeast of Lake Akkala. Link can use the nearby Hyrule Restoration Materials to hold up the sign.
Location - Exchange Ruins
Found just east of the ruins, Link can use a Stake and a Stone Slab to hold up the sign.
Location - Foothill Stable
Found just southwest of the Foothill Stable. Link can use the nearby Hyrule Restoration Materials to hold up the sign.
Location - Great Plateau Foothill Cave
Found just outside the cave, by the intersection of the roads. Use the nearby Lumber and the wood that is laying around to hold up the sign.
Location - Gut Check Rock
Found just northeast of the rock. Use the nearby Boards and Lumber to hold the sign up.
Location - Hanu Pond
Found between the Hanu Pond and Koto Pond, just northeast of the Rabella Wetlands Skyview Tower. Chop down some trees and use the Logs to hold up the sign.- .jpg
Location - Hyrule Castle Town Ruins
Found in the Hyrule Castle Town Ruins, at the southwest part of the Central Square. There are numerous building supplies just south of Addison. 
Location - Hyrule Ridge
Found south of the small Lake, Link can hold up the sign using the nearby Boards.
Location - Kolami Bridge
Found just south of the bridge, on the main road. Use the nearby Boards to hold it up.
Location - Lodrum Headland
Found at the west side of Lodrum Headland. Cut down some trees and use the Lumber to hold the sign up.- Mapla-Point-Hudson-Sign.jpg
Location - Mapla Point
Found on cliffside, at the east side of the Point. Use the nearby Boards to hold up the sign. 
Location - Meadela's Mantle
Found on the higher elevation just southwest of the Gerudo Highlands Skyview Tower. Use a nearby Board and a Stabilizer to hold up the sign.
Location - Mercay Island
Found on top of a hill on the island. Attach two nearby Boulders into each other and use them to support the sign.
Location - Mount Gustaf
Found near the intersection, northeast of Mount Gustaf. Use the various Boards to hold up the sign.
Location - Mount Lanayru
Northeast of the Skyview Tower at the lower elevation. Cut down some trees and use the Logs to hold up the sign.
Location - Mount Rhoam
Found at the peak of the mountain. Use one of the nearby Boulders to hold up the sign.
Location - Octorok Lake
Just west of the lake, along the main path. Use the nearby restoration materials to hold up the sign.
Location - Pappetto Grove
At the end of the marked pathway. Use the nearby restoration materials to hold up the sign.
Location - Pillars of Levia
East of the Pillars, down by the main path. Link can use the nearby Boards to hold up the sign.
Location - Oseira Plains
At the west of the Oseira Plains, near the inclining slope. Use a Stabilizer and boards to hold up the sign.
Location - Popla Foothills
Found southeast of the Skyview Tower. Use two boulders to hold up the sign.
Location - Rabia Plain
Found at the far southwest end of the plain. Use a Board and Hook to hold up the sign.
Location - Rebonae Bridge
Found west of the bridge, right along the main path. Link can use a Board to hold up the sign.
Location - Samasa Plain
On the beach at the far west end of Lanayru Bay. Use the Board to hold up the sign.
Location - Seres Scablands
Found south of the main path. Use the nearby Boards to hold the sign up.
Location - Sahasra Slope
Found on the path, northeast of the Sahasra Slope Skyview Tower. Use the nearby Boards to hold the sign up.
Location - South Tabantha Snowfield
Found on the path, southwest of Snowfield Stable. Use the nearby restoration materials to hold the sign.
Location - Tamio River
Found near the river, south of Washa's Bluff. Link can use the nearby Boards to hold up the sign.
Location - Trilby Plain
Found along the pathway, just east of the Thims Bridge. Use the Hyrule Restoration Materials to hold up the sign.
Location - Ukuku Plains
Found at the southeat end of the region. Link can use a Stake and Board to hold the sign up.
Location - Upland Zorana
Found just north of the Upland Zorana Skyview Tower, on the other side of the hill. Use the Boards and Lumber to hold the sign.
