"Ish Ga Fret" (I should worry) in 1914 baseball article

[Gerald Cohen]

Here's another oddity I've come across in the 1914 baseball columns
of the _San Francisco Bulletin_: "Ish Ga Fret" (= I should worry;
actually expresses just the opposite). "Ish" looks like (dialectal)
German; "Fret" is English "fret" (worry); but what is "Ga"? Might
there be some connection with "ish kabibble," for which HDAS gives
1913 as the first attestation and which has the same meaning (I
should worry = I don't care)?

    The item appears below my signoff.

Gerald Cohen


[San Francisco Bulletin]:
March 18, 1914, p.11/5-6; 'Does Mr. Overall Really Know His Own
Mind?'; col. 5: "But whether Overall comes or goes, [Seals manager]
Howard has no occasion to worry.  The signing of new talent which
graces the pitching staff of the club this season has made Howard a
member of the Ish Ga Fret society and he can easily afford to assume
the dictatorial position in the matter with Maier
[I.e., if Overall goes to the Venice club, Maier will have to pay
dearly for him].
But rest assured, if Overall goes to Venice, the San Francisco club
will not suffer."