Here is a 1978 paper "Compilation and delayed evaluation in APL": https://dl.acm.org/doi/abs/10.1145/512760.512761 https://dl.acm.org/doi/abs/10.1145/512760.51

Here is a 1978 paper "Compilation and delayed evaluation in APL": https://dl.acm.org/doi/abs/10.1145/512760.512761 https://dl.acm.org/doi/abs/10.1145/512760.512761 In the citations there is a 1970 paper "An APL Machine" which had some techniques which might or might not be considered a JIT.