| Acronym/Abbreviation | Stands for... | Found here... | 
| 404 | Form 404 - Arrival Information | Occupation Column | 
| 505 | Form 505 - Arrival Information | Occupation Column | 
| ACL | Alien Contract Labor | Special Inquiry | 
| B/C | Bureau Correspondence | Name Column | 
| B-i-l | Brother-in-law | Record of Detained Aliens | 
| B.S.I. | Board of Special Inquiry | Left Margin | 
| C | Certificate (usually) | Nationality and Citizenship | 
| C/A | Certificate of Arrival | Occupation Column | 
| C.L. | Certificate of Landing | Occupation Column | 
| CL | Contract Labor | Special Inquiry | 
| D | Detained | Left Margin | 
| Dcd. | Discharged | Other | 
| Dep.-Excl. | Deportable and Excludable | Special Inquiry | 
| D.O.S. | Department of State | Name Column | 
| Husb | Husband | Record of Detained Aliens | 
| LPC | Likely Public Charge | Special Inquiry or Other | 
| Med Cert | Medical Certificate | Special Inquiry or Other | 
| Nat or Natz | Naturalized | Nationality and Citizenship | 
| N.O.B. | Not On Board | Left Margin | 
| P | Permit | Name Column | 
| Rech | Recheck | Occupation Column | 
| R.R. | Railroad | Record of Detained Aliens | 
| S.I. | Special Inquiry | Left Margin | 
| Tel $ | Telegram sent for money | Record of Detained Aliens | 
| USB | US Born | Nationality and Citizenship | 
| USC | United States Citizen | References to Other Pages or Lists | 
| V/L | Verification of Landing | Name Column | 
| X | "Detained" | Left Margin |