TABLE 6.--WAGE EARNERS ENGAGED IN MANUFACTURING, BY MONTHS, FOR THE UNITED STATES, 1939 AND 1937, AND BY STATES, 1939

AUTOMOBILE TRAILERS (FOR ATTACHMENT TO PASSENGER CARS)

[A preliminary report for this industry was issued November 23, 1940]

1 Colorado, 2 establishments; Florida, 3; Idaho, 1; Maryland, 1; Minnesota, 1; Mississippi, 1; Missouri, 1; New York, 2; Ohio, 1; Oklahoma, 1; Pennsylvania, 2; Texas, 3; Washington, 1; Wisconsin, 2.

Value of products less cost of materials, supplies, fuel, purchased electric energy, and contract work. See GENERAL EXPLANATIONS-Value added by manufacture.

TABLE 3.-VALUE OF PRODUCTS FOR THE UNITED STATES: 1939 AND 1937

AUTOMOBILE TRAILERS

TABLE 4.-PRODUCTS, BY KIND, QUANTITY, AND VALUE, FOR THE UNITED STATES:
1939 AND 1937

531

Made in the "Automobile trailers (for attachment to passenger cars)" industry, 13,036 units, valued at $7,585.727; made in the "Motor vehicles, motor-vehicle bodies, parts and accessories" industry, 1,827 units, valued at $233,637; made in industries outside the "Automobiles and automobile equipment" group, 1,751 units, valued at $71,504, and an unspecified number of units valued at $54,335.

TABLE 5.-WAGE EARNERS ENGAGED IN MANUFACTURING, BY MONTHS, FOR THE UNITED STATES, 1939 AND 1937, AND BY STATES, 1939

Group 19.-TRANSPORTATION EQUIPMENT EXCEPT AUTOMOBILES

Description of the group of industries. This group of industries embraces establishments primarily engaged in manufacturing equipment for transportation by air, land, and water. However, establishments producing automobiles and automobile equipment are included in the "Automobiles and automobile equipment" group. The "Transportation equipment except automobiles" group comprises the following industries:

1. Locomotives (including frames) and parts-railroad, mining, and industrial.

which includes establishments primarily engaged in building or repairing ships of 5 gross tons and over, and (b) the "Boat building and boat repairing" industry, which embraces establishments whose major activity is the building or repairing of boats of less than 5 gross tons. A special tabulation was made of the reports for 1937 in order to obtain figures comparable with the 1939 statistics for each of these industries.

At censuses prior to that for 1939, the manufacture

2. Cars and car equipment-railroad, street, and rapid- of aircraft engines was treated as part of the "Engines,

transit.

3. Aircraft and parts, including aircraft engines.

4. Shipbuilding and ship repairing.

5. Boat building and boat repairing.

6. Motorcycles, bicycles, and parts.

7. Transportation equipment not elsewhere classified (horsedrawn vehicles and parts; wheelbarrows, etc.).

For a detailed explanation of the scope of each of these industries, see reports for the industries.

turbines, water wheels, and windmills" industry rather than as part of the "Aircraft and parts" industry. Since establishments primarily engaged in the manufacture of aircraft engines are now included in the more extensive "Aircraft and parts (including aircraft engines)" industry, a special tabulation was made of the 1937 reports showing aircraft engines as the major product in order to obtain figures for 1937 comparable with those for 1939. For years prior to 1937, however, no adjustment has been made and data for plants which in the earlier years were primarily engaged in manufacturing aircraft engines are not, therefore, included in the statistics for this group for those years.

Prior to the Census of Manufactures for 1939, ship and boat building and repairing were included in a single industry, "Ship and boat building and repairing." For 1939, however, this industry was divided into (a) the "Shipbuilding and ship repairing" industry, SUMMARY FOR GROUP 19.-TRANSPORTATION EQUIPMENT EXCEPT AUTOMOBILES, 1923 TO 1939, AND FOR SUBGROUPS AND INDUSTRIES, 1939 AND 1937