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    For further information, see "P. L. Inventor of the Robertson Screw" by Ken Lamb. SCAN ONLY

    For further information see "P.L. inventor of the Robertson Screw" by Ken Lamb. SCAN ONLY

    For further information, see "P. L., inventor of the Robertson Screw" by Ken Lamb. SCAN ONLY

    Titled "Sorting. M.P.B.Co." William Fraser (father of Adeline Mackay) is second from the left. Sorting bricks in the kiln.

    Isa and Jessie Robertson were the sisters of P.L. Robertson. For further information see "P.L. Inventor of the Robertson Screw" by Ken Lamb.

    John and Annie Robertson were the parents of the inventor P. L. Robertson. John died in 1886 and Annie in 1909. John was an immigrant from Scotland and Annie was born in Canada, the daughter of Scott

    For further information regarding P. L. Robertson, please consult "P.L., Inventor of the Robertson Screw" by Ken Lamb and "Milton Area Biographies, Vol. II" by Alex Cooke.

    Left to right - John Brown Robertson, William Robertson (oldest of the boys), Annie (Brown) Robertson with P.L. in her arms, Hatton Robertson, Isabella (Isa), Janet (Jessie), John Robertson, father o

    For further information regarding P.L. Robertson, please consult "P.L., inventor of the Robertson Screw" by Ken Lamb and "Milton Area Biographies, Vol. II", by Alex Cooke.

    For further information regarding the P. L. Robertson Co., please consult "P. L., inventor of the Robertson Screw." by Ken Lamb.

    Good condition. For further information regarding P.L. Robertson, please consult "P.L. Robertson, inventor of the Robertson Screw", by Ken Lamb, and "Milton Area Biographies, V.2."

    For further information on P. L. Robertson, please see "P. L. Inventor of the Robertson Screw" by Ken Lamb and "Milton Area Biographies" by Alex Cooke.

    For further information regarding P.L. Robertson, please consult "P.L. Inventor of the Robertson Screw" by Ken Lamb, and "Milton Area Biographies V.2."

    Peter Lymburner Robertson, 1879-1951. Inventor, industrialist. Inventor of the Robertson Recess Screw. For more information, see "P. L. Inventor of the Robertson Screw" by Ken Lamb.

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    Image #320 is a duplicate of image #300

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