美国妇科俱乐部成立于1911年，是美国历史最悠久的妇科组织. The purposes of AGC include the general advancement of obstetrics and gynecology; the opportunity of observing the 教育al, 临床, and experimental work of its members in various institutions; and the stimulation among its members of informal discussion and free exchange of ideas, 而不是书面交流.
BG大游集团(ASBA)成立于1965年.S. 网球场 & 中国田径工程技术协会&TBA); its name was changed in 2004 to reflect the broad range of work performed by its members. 拥有400多家会员公司, ASBA是一个全国性的建筑商组织, 网球场材料的设计师和供应商, 跑道, 人工草皮字段, 室内和室外合成运动表面.
The Maryland Criminal Defense Attorneys' Association was formed to promote study and 研究 in the field of criminal defense law and the related areas; to disseminate by lecture, seminars and publications the advance of the knowledge of the law as it relates to the field of criminal defense practice; to promote the proper administration of justice; to foster, 保持和鼓励诚信, independence and expertise of the defense lawyer in criminal cases; and, 促进辩护律师定期举行会议，并提供一个论坛，以便就刑事司法的管理进行实质性的信息交流，从而使其关注个人权利的保护和刑法的改进, 其做法和程序. MCDAA的成员包括马里兰州的律师和相关专业人士.