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    <nameOfIssuer>Abbott Laboratories</nameOfIssuer>
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    <cusip>00287y109</cusip>
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    <nameOfIssuer>Alphabet (Google) Inc CL A vot</nameOfIssuer>
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    <cusip>02079K305</cusip>
    <value>1902</value>
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    <nameOfIssuer>Alphabet (Google) Inc CL C</nameOfIssuer>
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    <nameOfIssuer>Altria Group Inc.</nameOfIssuer>
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    <cusip>037833100</cusip>
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    <nameOfIssuer>Century Bancorp Cl A</nameOfIssuer>
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    <nameOfIssuer>Costco Wholesale Corp</nameOfIssuer>
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    <nameOfIssuer>Expeditors Int'l (WA)</nameOfIssuer>
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    <value>793</value>
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      <sshPrnamt>7400</sshPrnamt>
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      <None>7400</None>
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    <nameOfIssuer>SPDR S&amp;P 500</nameOfIssuer>
    <titleOfClass>ETF</titleOfClass>
    <cusip>78462f103</cusip>
    <value>28608</value>
    <shrsOrPrnAmt>
      <sshPrnamt>105457</sshPrnamt>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>105457</None>
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    <nameOfIssuer>SPDR S&amp;P Midcap 400</nameOfIssuer>
    <titleOfClass>ETF</titleOfClass>
    <cusip>78467y107</cusip>
    <value>13097</value>
    <shrsOrPrnAmt>
      <sshPrnamt>36890</sshPrnamt>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>36890</None>
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    <nameOfIssuer>Vaneck Vectors Oil Services</nameOfIssuer>
    <titleOfClass>ETF</titleOfClass>
    <cusip>92189F718</cusip>
    <value>248</value>
    <shrsOrPrnAmt>
      <sshPrnamt>9450</sshPrnamt>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>9450</None>
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    <nameOfIssuer>Vanguard FTSE Emerging Markets</nameOfIssuer>
    <titleOfClass>ETF</titleOfClass>
    <cusip>922042858</cusip>
    <value>838</value>
    <shrsOrPrnAmt>
      <sshPrnamt>19850</sshPrnamt>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
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      <None>19850</None>
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    <nameOfIssuer>Vanguard S&amp;P 500</nameOfIssuer>
    <titleOfClass>ETF</titleOfClass>
    <cusip>922908363</cusip>
    <value>1270</value>
    <shrsOrPrnAmt>
      <sshPrnamt>5090</sshPrnamt>
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    <investmentDiscretion>SOLE</investmentDiscretion>
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      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>5090</None>
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    <nameOfIssuer>Blackstone Group LP</nameOfIssuer>
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    <cusip>09253U108</cusip>
    <value>1212</value>
    <shrsOrPrnAmt>
      <sshPrnamt>37670</sshPrnamt>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>37670</None>
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    <nameOfIssuer>IShares Stoxx Europe 600</nameOfIssuer>
    <titleOfClass>ETF</titleOfClass>
    <cusip>DE0002635</cusip>
    <value>1027</value>
    <shrsOrPrnAmt>
      <sshPrnamt>23300</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>23300</None>
    </votingAuthority>
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</informationTable>
