Here's an article from one of the old newspapers I mentioned above, Titus. This is from The Daily Picayune of New Orleans in the April 11, 1861 issue:
Military Preparations at the North
The New York Herald, of the 6th inst., gives accounts of what is going on in this way, in anticipation of a coercive policy on the part of the Washington administration. It says that on the 5th inst., Gov. Curtin, of Pennsylvania, besides being closeted with Lincoln for an hour, had an interview with Secretary Cameron and Gen. Scott, and at 11 o'clock that same night had a private interview with one of Gen. Scott's confidential officers. There is no doubt, it adds, that Pennsylvania will be put upon a war footing immediately.
Massachusetts is said to have six thousand six hundred and seventy men, all equipped and ready to march at twelve hours notice. Among them, says the Herald, are two flying artillery batteries, almost as expert in drill as the best regulars, and several dragoon and cavalry corps, not surpassed in efficiency by any in the volunteer militia in the United States. The infantry troops are well drilled.
New York State, according to the same authority, is pledged to furnish ten thousand men at forty-eight hours notice, and other States in proportion.
How could these troops be ready to move on short notice if they were not already mobilized? Here's confirmation from a modern source [Link]:
In Massachusetts, New York, Pennsylvania and Ohio, alert Republican governors secretly mobilized and reequipped volunteer militia companies; when Lincoln called for help they marched the next day.
This is still a month after the south called for an army of 100,000 to be raised on March 6, which Titus claims was only done after the north began to mobilize.
If they were ready to move on short notice why did it take weeks to actually mobilize them? According to your article Massachusetts had 6600 men ready to go. Among them "...several dragoon and cavalry corps, not surpassed in efficiency by any in the volunteer militia in the United States." Yet according to this site which gives the history of all the Union, and many of the rebel, units that were raised during the rebellion the first Massachussetts cavalry regiment wasn't mustered in until December of 1861. Guess they weren't all that efficient after all, huh? Massachussetts had a handful of regiments which mustered in after Lincoln's call for milita, but only one regiment which was supposed to be ready and offered to the government before Sumter was fired on. So where was this mobilization, rustbucket? Where were all these regiments? Pennsylvania, New York, Connecticut, none of the states show regiments being raised before Sumter. But the New Orleans Picayune said they were, so it must be show.
I got to hand it to you, rustbucket. Your sources are still up to your usual standards.