This book covers the author’s field experiences as an ethnographer in one country of Central America and an applied anthropologist in four US regions. A range of social fields are examined, which include: constructing a work experience table as a composite job resume; correspondence with a maximum security prisoner for more than ten years; design features for multiple choice testing; farmworker sero-prevalence reports; health-seeking behavior among the Ngoebe (indigenous people in Central America); HIV/AIDS education in rural farm labor camps; Latinx naming practices for grocery stores and restaurants in agricultural areas; organizational capacity building assistance training; and teaching students in a community college and three secondary schools, among others. The book highlights the importance of incorporating ethnography in the completion of work tasks across a range of social fields, which represent diverse socio-cultural groups and immigrant populations.