Paper and discussions: Is Prequalification of Bidders a Success? L. I. Hewes; American Contractors in Foreign Countries, With Special Reference to Latin America, R. W. Hebard; Survey in the 48 States of Weather Conditions, Working Days, Bonus and Penalty Requirements, C. N. Conner; Recent Legislation Affecting the Interests of Highway Contractors, J. F. Ingham; Grading Methods and Grading Equipment, B. E. Gray; Airport Construction as a Field for Highway Contractors, R. P. Bayard; Outlook for Municipal Street Construction, New Paving and Maintenance of Streets During 1930, H. S. Buttenheim; Highway Construction and Maintenance in States and Counties, C. R. Thomas; Airport Construction and Maintenance, W. A. Hardenbergh; What the Manufacturer Contributes to Highway Progress, W. T. Chevalier; Credit Structure as Established by the Performance Record of the Individual Contracting Concern, S. M. Williams; Highway Location, R. G. Browning; Standardization of Methods for Purchasing Equipment; Depreciation of Equipment; Standardization of Weighing Devices for Concrete Aggregates; Highway Finance, C. M. Upham; Grade Crossings; Country Highway and Airport Pavement 1893-1930, G. C. Warren; Assessing and Financing Pavements; Uniform Cost Accounting; Design and Construction; Pavement Wearing Surface; Street Railway Tracks and Paving; Contracts and Specifications; Subgrades and Pavement Bases; Surfaces -- All Types; Street Openings or Cuts; Paving Cuts -- Report on Detroit Practices, P. A. Fellows; Street Cleaning; Resurfacing and Salvaging of Existing Surfaces; Unpaved Streets; Causes of Accidents -- Parking in Business Districts; Traffic Signals and Signs, Street Lighting; Weights and Loads -- Traffic Zoning; Traffic Law Enforcement, Drivers' Permits; Subgrades and Pavement Bases; Municipal Airports; Legislation; Finance; Organization; Administration; Regional Surveys and Plans; General Design as to Location, Grading and Drainage; Plans, Specifications and Construction of Untreated Surfaces; Plans, Specifications and Construction of Surface Treatments; Plans, Specifications and Construction of Pavements; Shoulders and Drains; Untreated Surfaces; Surface Treatments; Pavements; Equipment; Snow Removal; Signs and Guard Rail; Latin American Highway Finance; Highway Program of Bolivia; Road Construction in Salvador; Highways of Colombia; Impressions on Highway Construction in Latin America, M. Lopez; Highways of Dominican Republic, J. M. Alvarez; Scholarship Plan of the Pan American Division, J. Rivera; Export Trade in the Road Building Equipment Field, T. H. MacDonald; Permanent International Association of Road Congress, R. H. MacDonald and M. Le Gavrian. ($5.00)