Alice K. Hartley

Alice Hartley (1937-2017) was an American computer scientist and business woman. Hartley worked on several dialects of Lisp, implementing multiple parts of Interlisp, maintaining Macintosh Common Lisp, and developing concepts in computer science and programming language design still in use today.

Alice K. Hartley
BornDecember 13, 1937
Bridgeport, Connecticut
DiedJune 29, 2017 (aged 79)
Boston, Massachusetts
NationalityAmerican
EducationMassachusetts Institute of Technology MSc Physics, June 12, 1959
Alma materMassachusetts Institute of Technology
Known forLisp, Interlisp, ANSI Common Lisp
Scientific career
InstitutionsMassachusetts Institute of Technology, Litton Industries, MIT, BBN, Paladian Systems, Apple Computer
ThesisAn investigation of clusters on two-lane highways (1959)
Doctoral advisorP. M. Morse

Hartley was a hobby gamer, playing and advising on early computer games in the 1970s and 1990s. Hartley was also an antiques collector, importer and dealer, and was the proprietor of Elephant and Castle, an antiques store in Boston.[1]

Hartley spent her career as a researcher at Litton Industries, MIT, BBN, an early employee and Vice President of Technology at Paladian Systems, and an engineer at Apple Computer before retiring in Boston, Massachusetts.

Early life

Alice Hartley was born in Bridgeport, Connecticut on December 13, 1937, to Lowell James Hartley of Minneapolis, Minnesota and Rachel Matilda Virta of Aura, Finland. Hartley graduated from Whittier Junior High School in Bridgeport and was valedictorian of the class of 1955. She was a member of the Newtonians science club and a cheerleader. [2] She was a finalist in the Fourteenth Annual Westinghouse Science Talent Search.[3] Hartley was accepted into MIT in 1955 on a General Motors Scholarship. She graduated with MSc in Physics on June 12, 1959.

Career

In 1961, Alice Hartley co-wrote a “Study program of pattern recognition research” With George S. Sebestyen at Litton Systems Inc[4]. This is the earliest record of her research-related employment outside of MIT.

Following Litton Industries, Alice Hartley worked as a Senior Scientist at BBN Technologies (Bolt Beranek and Newman Inc.) from as early as 1969 when she “took over Dan Murphy’s role in BBN Lisp” and added a number of new data types to the system including; “arrays, strings, large numbers, floating point numbers”[5].

During her time at BBN, Hartley co-developed the concept of the spaghetti stack[5] with Daniel G. Bobrow, a form of stack tracing functionality in Interlisp which brought early debugging tools to the programming community. Hartley also worked with Douglas W. Clark on the implementation of the list-linearizing garbage collector[6].

Hartley is listed as the maintainer of Interlisps Basic System in the 1974 “Interlisp Reference Manual” alongside Warren Teitelman (User Facilities) and JW Goodman (Special Arithmetic Functions)[7]. It reads:

A. K. Hartley Basic system: i.e., interpreter, input/output, garbage collector; plus all subrs, i.e. hand-coded machine language functions such as PRINT, CONS, PROG, GO, etc.; plus compiler.

Hartley is thanked by Paul Graham in the introduction to ANSI Common Lisp[8] and is mentioned as a collaborator by Guy Steele in The Evolution of Lisp[9].

Hartley resigned from BBN on November 7th, 1984 to join a new AI engineering firm, Palladian Software, Inc, as Vice President of Technology, where she worked until 1987. While at Palladian, Hartley lead the development of various “Artificial Intelligence” systems for financial modeling and trading in the financial markets.

After Palladian Software Inc, Hartley worked for Apple Computers on Allegro Common Lisp and tools for using Lisp on the Macintosh[10]. Hartley single-handedly maintained Macintosh Common Lisp until 2007 when she open-sourced the source code under LLGPL[11][12][13].

gollark: With Dan, not you.
gollark: I agree.
gollark: Gaze upon my vast powers.
gollark: Only cool people get to post images here.
gollark: Humans are a subset of animals, yes.

References
  1. "Collection: Alice K. Hartley personal archives". archivesspace.mit.edu. Retrieved 2020-04-04.
  2. "The BASSICK VOICE" (PDF). Bridgeport Public Library. Retrieved 2020-04-04.
  3. "Names of winners and honorable mentions in 1955 Science Talent Search, 1955". emmas-lib.mit.edu. Retrieved 2019-08-12.
  4. Sebestyen, George S; Hartley, Alice K; LITTON SYSTEMS INC WALTHAM MASS. (1961). Study program of pattern recognition research. Defense Technical Information Center. OCLC 227276026.
  5. Teitelman, Warren (2008). "History of Interlisp". Celebrating the 50th Anniversary of Lisp. LISP50. New York, NY, USA: ACM: 5:1–5:5. doi:10.1145/1529966.1529971. ISBN 9781605583839.
  6. Clark, Douglas Wells. "List structure: measurements, algorithms, and encodings". dl.acm.org. Retrieved 2020-04-04.
  7. Teitelman, Warren (1978). Interlisp reference manual (PDF). Xerox Palo Alto Research Center. OCLC 4590976.
  8. Graham, Paul (1996). ANSI Common Lisp. Englewood Cliffs, N.J: Prentice Hall. ISBN 0-13-370875-6. OCLC 33334659.
  9. Steele, Guy L.; Gabriel, Richard P. (1993-03-01). "The evolution of Lisp". ACM SIGPLAN Notices. Association for Computing Machinery (ACM). 28 (3): 231–270. doi:10.1145/155360.155373. ISSN 0362-1340.
  10. Zacharski, Ron (March 1991). "Macintosh Allegro Common Lisp: New Version Replaces Objectlisp with CLOS". Academic Computer Services Newsletter. 25 (3).
  11. "Clozure CL History". ccl.clozure.com. Retrieved 2019-08-07.
  12. R. Matthew Emerson. "Keynote: This Old Lisp : Presentation Slides" (PDF). European Lisp Symposium. Retrieved 2020-04-04.
  13. "This Old Lisp". thisoldlisp.com. Retrieved 2019-08-07.
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