What does this abbrevition refer to?

[JefferySmith]

I have an excerpt from a chapter I am reading:

"His successor was Leo N. Levi (b. in Victoria, Tex., 1856; d. in New York, 1904), who was in turn succeeded by the present incumbent, Adolf Kraus (b. in Bohemia, 1850; a. 1865), an eminent attorney, who has resided in Chicago since 1871, where he has served as President of the Board of Education, Corporation Counsel of the city and President of the Civil Service Commission."

The b. refers to born, the d. refers to died, and the a. refers to ...... what?

[Beeswaxcandle]

I have an excerpt from a chapter I am reading:

"His successor was Leo N. Levi (b. in Victoria, Tex., 1856; d. in New York, 1904), who was in turn succeeded by the present incumbent, Adolf Kraus (b. in Bohemia, 1850; a. 1865), an eminent attorney, who has resided in Chicago since 1871, where he has served as President of the Board of Education, Corporation Counsel of the city and President of the Civil Service Commission."

The b. refers to born, the d. refers to died, and the a. refers to ...... what?

Per his Wikipedia article, that's the year he emigrated from Bohemia to US. So, I guess it means "arrived".

[JefferySmith]

That makes more sense than anything I could think of. I will go with that and tweak the recording if something else seems to supersede it.

Thanks!

Jeffery