Photocopies of memos and papers written by Ernest Lenaerts following his secondment to the EDSAC team in Cambridge, as research for preliminary work on LEO I.

Comprises:
- 151-153. Photocopy of a paper: Estimates of the Cost of Preliminary Work and Advance Provisioning for the Electronic Computor, 2nd February 1949; 
- 154-156. Photocopy of a file copy (written by Lenaerts) of a memo from W.J. Edwards to John Simmons enclosing a list of required equipment prepared by Lenaerts, undated [Lenaerts mentions submitting the report in his memo to Mr Mayne, 19th Nov].
- 157-158. Photocopy of a draft memo from Ernest Lenaerts to John Simmons, undated: Test Equipment needed for the Construction and Maintenance of an Electronic Computer.

Page numbers in red were added by Peter Bird.

Provenance :
The photocopies were originally requested by Peter Bird, as part of his research for LEO - The First Business Computer, and later donated to the NAHC, then transferred to CCH at the request of the LEO Computers Society for inclusion in their archive.