CREATE TABLE table_18413 ("District" TEXT, "Incumbent" TEXT, "Party" TEXT, "First elected" FLOAT, "Result" TEXT, "Candidates" TEXT)

What district is incumbent albert w. johnson from?
SELECT "District" FROM table_18413 WHERE "Incumbent" = 'Albert W. Johnson'
SELECT "District" FROM "table_18413" WHERE "Incumbent" = 'Albert W. Johnson'