Classic Poem

Have arrived at this interrogatory.
Would know, for private information only.
Knowledge informs the what of the what.
For twenty-six years, six months, seventeen days,
Have studied what for what,
Spoken of what to what,
Am now tired of what
And know not what
For all the what have read or written
Since was who.
What is what is what.
That's that. Am no wiser
For all that, for being wise.
Would now know for private information only.
Would like now to know who.
Am who:
Would be obliged to be informed of others.
So far each who whom have encountered
Has been which.
Would be obliged to hear from who are who,
Pleased to meet you, glad to know you.
Have quantity guaranteed self
Willing affiliate with private party.
Will not ask name, publisher, address.
Confidence given and taken free of charge
And treated with the strictest confidence.
Would like to know who's who and who is who.
Respond in person.
Inquire within.
Frankness or secrecy
Need not apply.
No correspondence about what I mean.
No branch establishments.
Am just plain who
Who would respectfully inquire
Thanking you in advance
Who is yours most sincerely