CREATE TABLE table_52217 ("Year" TEXT, "Builder" TEXT, "Motors" TEXT, "Trailers" TEXT, "Control Trailers" TEXT)

Name the year for mcwf and control trailers of 35
SELECT "Year" FROM table_52217 WHERE "Builder" = 'mcwf' AND "Control Trailers" = '35'
SELECT "Year" FROM "table_52217" WHERE "Builder" = 'mcwf' AND "Control Trailers" = '35'