Safety Codes—Continued.
No. 447. Safety code for rubber mills and calenders.
No. 451. Safety code for forging and hot-metal stamping.
No. 463. Safety code for mechanical power-transmission apparatus—Arst revision.

Vocational and Workers’ Education.
“No. 159. Short-unit courses for wage earners and a factory school experiment. [1915]
*No. 162. Vocational education survey of Richmond, Va. [1915.]
No. 199. Vocational education survey of Minneapolis, Minn, [1917]
No. 271. Adult working-class education in Great Britain and the United States. [1920.]
No. 549. Apprenticeship in building construction. 1928.
Wages and Hours of Labor.
*No. 146. Wages and regularity of employment and standardization of piece rates in the dress and
waist industry of New York City, [1914]
*No. 147. Wages and regularity of employment in the cloak, suit, and skirt industry. [1914.]
No. 161. Wages and hours of labor in the clothing and cigar industries, 1911 to 1913.
No. 163. Wages and hours of labor in the building and repairing of steam-railroad cars, 1907 to 1913.
‘No. 190. Wages and hours of labor in the cotton, woolen, and silk industries, 1907 to 1914.
No. 204. Street-railway employment in the United States. [1917.]
No. 225. Wages and hours of labor in the lumber, millwork, and furniture industries, 1915.
*No. 265. Industrial survey in selected industries in the United States, 1919.
No. 297. Wages and hours of labor in the petroleum industry, 1920.
No. 356. Productivity costs in the common-brick industry. [1924.]
No. 358. Wages and hours of labor in the automobile-tire industry, 1923,
No. 360. Time and labor costs in manufacturing 100 pairs of shoes. [1923.)
No. 365. Wages and hours of labor in the paper and pulp industry, 1923.
No. 394. Wages and hours of labor in metalliferous mines, 1924.
No. 407. Labor cost of production and wages and hours of labor in the paper box-board industry.
{1926.]
No. 412. Wages, hours, and productivity in the pottery industry, 1925.
No. 413. Wages and hours of labor in the lumber industry in the United States, 1925.
No. 416. Hours and earnings in anthracite and bituminous coal mining, 1922 and 1924.
No. 421. Wages and hours of labor in the slaughtering and meat-packing industry, 1925.
No. 422. Wages and hours of Jabor in foundries and machine shops, 1925.
No. 435. Wages and hours of labor in the men’s clothing industry, 1911 to 1926.
Wo. 438. Wages and hours of labor in the motor-vehicle industry, 1925.
No. 442. Wages and hours of labor in the iron and steel industry, 1907 to 1926.
No. 443. Wages and hours of labor in woolen and worsted goods manufacturing, 1010 to 1926.
No. 446. Wages and hours of labor in cotton-goods manufacturing, 1910 to 1926.
No. 450. Wages and hours of labor in the boot and shoe industry, 1907 to 1926.
No. 4562. Wages and hours of labor in the hosiery and underwear industries, 1907 to 1926.
No. 454. Hours and earnings in bituminous-coal mining in 1922, 1924, and 1926.
No. 457. Union scales of wages and hours of labor, May 15. 1927.

Welfare Work.
*No. 123. Employers’ welfare work. [1913.]
No. 222. Welfare work in British munition factories. [1917.]
*No. 250. Welfare work for employees in industrial establishments in the United States. [1919.]
No. 458. Health and recreation activities in industrial establishments, 1928.

Wholesale Prices.
No. 284. Index numbers of wholesale prices in the United States and foreign countries. [1921]
No. 440. Wholesale prices, 1890 to 1926.
No. 453. Revised index numbers of wholesale prices. 1923 to July, 1927.
Women and Children in Industry.
No. 116. Hours, earnings, and duration of employment of wage-earning women in selected industries
in the District of Columbia. [1913.]
*No. 117. Prohibition of night work of young persons. [1913] "
*No. 118. Ten-hour maximum working-day for women and young persons. [1913.]
*No. 119. Working hours of women in the pea canneries of Wisconsin. [1913.]
*No. 122. Employment of women in power laundries in Milwaukee. [1013.]
No. 160. Hours, earnings, and conditions of labor of women in Indiana mercantile establishments
and garment factories. [1914.]
*No. 167. Minimum-wage legislation in the United States and foreign countries. [1915.]
*No. 175. Summary of the report on conditions of woman and child wage earners in the United States
[1915.1