54 STAT.] 76TH CONG. , 3D SESS.--CH. 333 -JUNE 12, 1940 tories; communication service; carfare; traveling expenses; profes- sional, scientific, technical, and law books; periodicals and reference books, blank books and forms; photographs; dictionaries and maps; leather and rubber articles for the protection of employees and property; the maintenance, repair, exchange, and operation of not to exceed two motor-propelled passenger-carrying vehicles and all necessary bicycles, motorcycles, and self-propelled machinery; the purchase, maintenance, and repair of equipment and fixtures, and so forth, $384,822: Provided,That not to exceed $10,000 of the amount herein appropriated may be expended for the erection of minor auxiliary structures. PARK POLICE Salaries: For pay and allowances of the United States Park Police force, in accordance with the Act approved May 27, 1924, as amended, $176,230. For uniforming and equipping the United States Park Police force, including the purchase, issue, operation, maintenance, repair, exchange, and storage of revolvers, bicycles, and motor-propelled passenger-carrying vehicles, uniforms, ammunition, and radio equip- ment and the rental of teletype service, $13,400. NATIONAL CAPITAL PARK AND PLANNING COMMISSION For reimbursement to the United States in compliance with sec- tion 4 of the Act approved May 29, 1930 (46 Stat. 482), as amended, $300,000. For each and every purpose, except the acquisition of land, requi- site for and incident to the work of the National Capital Park and Planning Commission as authorized by the Act entitled "An Act providing for a comprehensive development of the park and play- ground system of the National Capital", approved June 62 1924 (40 U. S . C. 71) as amended, including personal services m the District of Columbia, maintenance, operation, and repair of motor- propelled passenger-carrying vehicles, not to exceed $1,000 for print- ing and binding, not to exceed $500 for traveling expenses and carfare of employees of the Commission, and not to exceed $300 for professional, scientific, technical, and reference books, and periodicals, $41,230. NATIONAL ZOOLOGICAL PARK For roads, walks, bridges, water supply, sewerage, and drainage; grading, planting, and otherwise improving the grounds, erecting and repairing buildings and enclosures; care, subsistence, purchase, and transportation of animals; necessary employees; traveling and incidental expenses not otherwise provided for, including not to exceed $2,000 for travel and field expenses in the United States and foreign countries for the procurement of live specimens and for the care, subsistence, and transportation of specimens obtained in the course of such travel; purchase (including exchange) of one pas- senger-carrying motor vehicle at not to exceed $650; maintenance and operation of one motor-propelled passenger-carrying vehicle required for official purposes; for the purchase, issue, operation, maintenance, repair, and exchange of bicycles and non-passenger- carrying motor vehicles, revolvers, and ammunition; not exceeding $2,500 for purchasing and supplying uniforms to Park Police, keep- ers, and assistant keepers; not exceeding $100 for the purchase of necessary books and periodicals, $239,910, no part of which sum shall be available for architect's fees or compensation. 333 Proviso. Minor auxiliary structures. Salaries. 43 Stat. 175. 20 D. C. Code 535. Uniforms, etc. Federal reimburse ment for lands ac- quired. 46 Stat. 485 . Incidental expenses. 43 Stat. 463 . 20 D. C. Code i§ 1632, 13, 1536. Expenses. Vehicles. Uniforms.