Hot water heat details for your enjoyment, in 130 YO house, Newberry, MI

Boiler, gas-converted Winkler with 'new June 1962' scratched on top (with old oil [?] burner on floor to L)	New June 1962 - etched in, way better than a $#@!! marker that will fade!	Boiler plate (can I call it that?) - marked as (maybe) model 91C-3 (but is that marked over on purpose?), serial # E-14581, etc., 83000 BTU/hr.	Pressure & TпїЅ gauges.	Expansion tank above
The ca. 1975 Adams Speedflame HP 200A gas burner conversion	Circulation pump? Looks newer: clean & shiny.	Closer view of same (made in china, frowny face)	What do these little dials set? (L one is at about 100, R 0one about 140)	Closer view of L one What does either adjust ?
Asbestos insulation in crawlspace under living room	Thermostat: replaced with intact ca. 1992 verrsion of same from restore. (I have no desire for some 'smart' hunkajunk - tracking me & demanding I-phone attention, I will always be Way smarter than a thermostat and can turn the dialmyself! This works just right AND matches my old wood wall, since it's not 'martha stewart wall white' - as all new ones are - to match every american interior since 1992 ... perhaps soon they'll all be a dismal gray to match the next 30 years of ugly wall color stupidity...)	Dining room & east radiator. Note ceiling fan (4 in house)! Also my thermometer on floor...	Living room: north/front & east side radiators	Downstairs most rooms have these ca. 1940s (estimated major 'modernization' date) type of wall radiator, which works OK and looks OK when sanded primed & painted with the walls as here
Front (north) upstairs sitting room & radiators...	Closer view-painted gold, with humidifier...	... & nice old bakelite valve.	Another view: "Cameo - Weil-McLain Co"	Heavily painted one in former upstairs kitchenette (to be my darkroom & print shop!)
Beauty in upstairs loo:	"American Radiator Co."	Under kitchen counter. What's the small copper tube for?	It's behind metal screen door cabinet-is this reasonable?	Similar in downstairs loo, with cover & dust...
In laundry room adj. to kitchen (brightest room in house & the only south-facing one!)	Attic well insulated-a lone bat there right 3rd rafter from vent!	Needs paint but wood-not vinyl! Signs of wall insulation: plugs	what's this 'water' cover (broken) on lawn go to? Shutoff of some sort?	Front view/north face: a $40k UP house! I need to restore a full width porch for proper balance- if I can move that tree